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1.
Nutrients ; 14(9)2022 Apr 20.
Article in English | MEDLINE | ID: mdl-35565672

ABSTRACT

The WHO European Region has the lowest exclusive breastfeeding (EBF) rates at 6 months in the world. In Austria, 55.5% of infants are EBF at the age of one week, although breastfeeding initiation is 97.5%. The study was conducted in 2019/2020 and considered 1214 mothers of legal age, who received four online questionnaires during their child's first year of life. The influence of different variables on total/exclusive breastfeeding duration were analysed by using a Cox model (Extension of the Cox Proportional Hazards Model) with time-dependent covariates. Multivariate analyses showed a significant influence of maternal BMI, lifestyle factors, such as smoking, and breastfeeding support on total breastfeeding duration. Remarkable differences in the median duration of any breastfeeding were found for breastfeeding support, where mothers breastfed twice as long. Support came primarily from hospital staff, the midwife and the partner. A higher monthly household net income, delivery in a baby-friendly certified hospital (BFH) and breastfeeding support were associated with a longer EBF duration. Obese mothers started feeding infant formula earlier and had a higher risk of early weaning. The results offer valuable insights into the importance of breastfeeding-friendly structures such as BFHs, a focus on breastfeeding aftercare and support of the mother to promote and protect breastfeeding.


Subject(s)
Breast Feeding , Mothers , Female , Humans , Infant , Infant Formula , Infant, Newborn , Time Factors , Weaning
2.
Insects ; 13(3)2022 Mar 10.
Article in English | MEDLINE | ID: mdl-35323574

ABSTRACT

In Austria, only fragmented information on the occurrence of alien and potentially invasive mosquito species exists. The aim of this study is a nationwide overview on the situation of those mosquitoes in Austria. Using a nationwide uniform protocol for the first time, mosquito eggs were sampled with ovitraps at 45 locations in Austria at weekly intervals from May to October 2020. The sampled eggs were counted and the species were identified by genetic analysis. The Asian tiger mosquito Aedes albopictus was found at two sites, once in Tyrol, where this species has been reported before, and for the first time in the province of Lower Austria, at a motorway rest stop. The Asian bush mosquito Aedes japonicus was widespread in Austria. It was found in all provinces and was the most abundant species in the ovitraps by far. Aedes japonicus was more abundant in the South than in the North and more eggs were found in habitats with artificial surfaces than in (semi-) natural areas. Further, the number of Ae. japonicus eggs increased with higher ambient temperature and decreased with higher wind speed. The results of this study will contribute to a better estimation of the risk of mosquito-borne disease in Austria and will be a useful baseline for a future documentation of changes in the distribution of those species.

3.
Article in English | MEDLINE | ID: mdl-34077339

ABSTRACT

Probabilistic exposure and risk assessment of chemical hazards in the diet have increasingly gained ground in recent years as a pragmatic approach for the approximation of reality. This work presents the outcomes of a project which aimed at applying probabilistic techniques for basic modelling of chronic dietary exposure to food contaminants following EFSA guidance. These techniques, based on Monte Carlo Risk Assessment (MCRA) software and on the programming language R, were employed for the risk assessment of cadmium for Austrian adults, enabling the validation and the critical comparison of the two approaches. Harmonisation and optimisation of procedures, refinement of exposure assessment skills and confidence in the results were the main benefits. Data amount and validity were identified as critical parameters, influencing the precision of the results. Cadmium was selected as a case study due to its toxicological properties, its ubiquitous presence in food and the availability of Austrian occurrence data. Similar exposure and risk estimates were generated through MCRA and R in alternative optimistic and pessimistic exposure scenarios, suggesting low levels of concern, except for vegetarians, whose upper tail exposures are close to the established Tolerable Weekly Intake. However, as occurrence data gaps have been identified as the major element of uncertainty, the estimated exposure and risk levels are characterised as underestimated. Grains and grain-based products, potatoes and leafy vegetables are the main contributors to the intake. The results will contribute to risk management and to a future refinement of the assessment.


Subject(s)
Cadmium/adverse effects , Dietary Exposure/statistics & numerical data , Food Contamination/analysis , Risk Assessment/methods , Risk Management/statistics & numerical data , Adolescent , Adult , Aged , Austria , Diet/statistics & numerical data , Dietary Exposure/adverse effects , Edible Grain/chemistry , Humans , Middle Aged , Models, Statistical , Monte Carlo Method , Population Surveillance , Software , Solanum tuberosum/chemistry , Vegetables/chemistry
4.
Vet Rec ; 189(8): e508, 2021 Oct.
Article in English | MEDLINE | ID: mdl-34057214

ABSTRACT

BACKGROUND: The increase in bacteria that are resistant to antimicrobials-often selected for a high level of antimicrobial uses (AMUs) in human beings or food-producing animals-is a global concern. The Austrian Poultry Health Service (QGV) has established a database containing comprehensive information on poultry flocks in Austria. METHODS: AMU in 32,411 broiler flocks and 2946 turkey flocks between 2013 and 2019 is analysed by calculating different metrics, including the treatment incidence TI1000 . Furthermore, the Austrian benchmarking system for poultry is introduced. RESULTS: Annual AMU in broilers decreased from 1030.8 kg of active ingredient to 762.5 kg between 2013 and 2016 but rose again to 1165.0 kg in 2019; while for turkeys annual AMU dropped from 1196.4 kg to 569.0 kg between 2013 and 2019. At the same time, the proportion of treated flocks decreased from 34.2% to 24.8% for broilers and from 54.3% to 44.0% for turkeys. In both broilers and turkeys, the most frequently used antimicrobial class, according to the TI1000 unit, in broilers and turkeys is polymyxins. CONCLUSION: Calculating different metrics enables a deeper insight into AMU. Total AMU reduced without legislation but the increase of AMU in broiler production needs further investigation.


Subject(s)
Anti-Infective Agents , Poultry Diseases , Animals , Anti-Bacterial Agents/therapeutic use , Anti-Infective Agents/therapeutic use , Austria/epidemiology , Chickens , Poultry , Poultry Diseases/drug therapy , Poultry Diseases/epidemiology , Turkeys
5.
Food Chem Toxicol ; 147: 111861, 2021 Jan.
Article in English | MEDLINE | ID: mdl-33220394

ABSTRACT

Through our daily diet, we are exposed to a variety of food contaminants. Yet, assessing the cumulative health risk of chemical mixtures remains a challenge. Using a recently developed method, the modified Reference Point Index (mRPI), the cumulative risks posed by contaminant mixtures were assessed for their effects on reproduction and development. Since these effects can be quite diverse, a tiered approach was adopted to elucidate the risks at a more detailed level based on specific toxicological endpoints. An additional analysis was performed using the modified Maximum Cumulative Ratio (mMCR), which provides the determination of risk-dominating substances in the mixture. Our method represents a novel useful tool to screen and prioritise contaminant mixtures regarding their potential health risks. We found, that in the majority of the calculated scenarios a single substance dominates the cumulative risks. Lead was found to be the primary factor for adverse effects on reproduction and neuronal development of children. Perchlorate was identified as the most prominent risk factor for child development in generalCumulative risks of trichothecenes were dominated by deoxynivalenol. Concerning the impact on pre- and neonatal development, the co-exposure of several substances resulted in increased risks, with none of the considered contaminants dominating substantially.


Subject(s)
Child Development/drug effects , Food Contamination , Hazardous Substances/toxicity , Infertility/chemically induced , Reproduction/drug effects , Austria , Child , Humans , Risk Assessment , Risk Management
6.
Food Chem Toxicol ; 145: 111719, 2020 Nov.
Article in English | MEDLINE | ID: mdl-32889018

ABSTRACT

Nitrates occur in food naturally, as contaminants or additives. The health implications attributed to ingested nitrates result primarily from their conversion into nitrites and subsequent methemoglobinemia, carcinogenicity induced by N-nitroso-compounds and cardiovascular, endocrine, metabolic, reproductive and developmental effects. The present study comprises a probabilistic tiered risk assessment of nitrates for Austrian adults through the diet with the application of the Monte Carlo simulation method in alternative optimistic and pessimistic scenarios. Risk estimates are of concern regarding the upper exposures, which exceed the Acceptable Daily Intake (ADI) in almost all scenarios and population groups. Exposure is elevated when all dietary sources are considered and the ADI is exceeded by already the mean intake for vegetarians. Leafy vegetables are major contributors to the intake. Contribution of cured meat is very low. Estimates of the conversion of nitrates into nitrites were used to assess the combined exposure to both species. When the average intake of nitrates and nitrites is considered, the mean exposure to nitrites is lower or close to the ADI for individuals with average conversion capacity. However, upper tail combined intake can lead to a multifold exceedance of the ADI of nitrites for individuals with both high and average conversion capacity.


Subject(s)
Dietary Exposure/analysis , Nitrates/metabolism , Nitrites/metabolism , Adult , Aged , Animals , Austria , Female , Food Additives/analysis , Food Additives/metabolism , Humans , Male , Meat Products/analysis , Middle Aged , Nitrates/analysis , Nitrites/analysis , No-Observed-Adverse-Effect Level , Risk Assessment , Vegetables/metabolism , Young Adult
7.
Food Chem Toxicol ; 143: 111480, 2020 Sep.
Article in English | MEDLINE | ID: mdl-32533995

ABSTRACT

Nitrites are present in the food chain as naturally occurring species or contaminants. Additionally, sodium and potassium nitrites are authorised food additives. Nitrites exert acute toxicity through methemoglobinemia or cardiovascular effects, chronic toxicity associated with endocrine, reproductive and developmental effects and have been classified as probable gastric carcinogens. Ingestion of food and water are the main sources of human exposure. This study comprises a tiered risk assessment of nitrites for the Austrian adult population, along with the identification of the food categories most contributing to their intake. The dietary exposure, based on Austrian occurrence and consumption data, was modelled with the Monte Carlo simulation method. In an additional scenario, data gaps were addressed with the usage of occurrence data published by the European Food Safety Authority and from the available literature to account for the exposure from all sources. Risk estimates regarding only the exposure to nitrite additives and to contaminated water indicate low level of concern. However, when exposure from all sources is considered, the estimated exposure is elevated and exceeds the Acceptable Daily Intake for high consumers. Mean exposure attributed to the use of nitrites as additives accounts for only a very small proportion of the total intake.


Subject(s)
Diet , Dietary Exposure , Food Contamination , Meat Products/analysis , Models, Biological , Nitrites/administration & dosage , Adult , Animals , Austria , Food Additives/analysis , Food Handling , Humans , Nitrites/toxicity , No-Observed-Adverse-Effect Level , Risk Assessment , Software
8.
Food Chem Toxicol ; 134: 110812, 2019 Dec.
Article in English | MEDLINE | ID: mdl-31505235

ABSTRACT

Risk assessment of chemical mixtures remains a challenging task in all areas of food and consumer safety. So far, no general method has been developed that is best suited to several subject areas (e.g. food contaminants, additives and supplements, plant protection products). Especially for mixtures of food contaminants sophisticated methods are typically not applicable due to a general lack of complete toxicological data sets. We developed a new approach, the modified Reference Point Index (mRPI), that combines the advantages of the Hazard Index and the Reference Point Index. Furthermore, we developed a decision tree for the determination of specific uncertainty factors that makes the mRPI an easy to use method for cumulative risk assessment even in a data poor field such as food contaminants. To further characterise the estimated cumulative risks, the Maximum Cumulative Ratio (MCR) was adapted to be applied on the mRPI, and the modified Maximum Cumulative Ratio (mMCR) was established to identify whether the risks are dominated by a single substance. We present two case studies assessing the nephrotoxic and neurotoxic risks for the Austrian population originating from food contaminant mixtures. Calculations could not rule out potential cumulative risks, yet, they seemed to be dominated by single substances.


Subject(s)
Decision Trees , Food Contamination , Risk Assessment , Uncertainty , Animals , Austria , Dietary Exposure , Humans , Limit of Detection
9.
PLoS One ; 14(7): e0219293, 2019.
Article in English | MEDLINE | ID: mdl-31287830

ABSTRACT

Austrian beekeepers frequently suffered severe colony losses during the last decade similar to trends all over Europe. This first surveillance study aimed to describe the health status of Austrian bee colonies and to analyze the reasons for losses for both the summer and winter season in Austria. In this study 189 apiaries all over Austria were selected using a stratified random sampling approach and inspected three times between July 2015 and spring 2016 by trained bee inspectors. The inspectors made interviews with the beekeepers about their beekeeping practice and the history of the involved colonies. They inspected a total of 1596 colonies for symptoms of nine bee pests and diseases (four of them notifiable diseases) and took bee samples for varroa mite infestation analysis. The most frequently detected diseases were three brood diseases: Varroosis, Chalkbrood and Sacbrood. The notifiable bee pests Aethina tumida and Tropilaelaps spp. were not detected. During the study period 10.8% of the 1596 observed colonies died. Winter proved to be the most critical season, in which 75% of the reported colony losses happened. Risks for suffering summer losses increased significantly, when colonies were weak in July, had queen problems or a high varroa mite infestation level on bees in July. Risks for suffering winter losses increased significantly, when the colonies had a high varroa mite infestation level on bees in September, were weak in September, had a queen older than one year or the beekeeper had few years of beekeeping experience. However, the effect of a high varroa mite infestation level in September had by far the greatest potential to raise the winter losses compared to the other significant factors.


Subject(s)
Animal Husbandry/methods , Beekeeping/trends , Mite Infestations/economics , Animal Husbandry/trends , Animals , Austria , Beekeeping/methods , Bees , Conservation of Natural Resources , Health Status , Honey , Risk Factors , Varroidae/pathogenicity
10.
Photochem Photobiol Sci ; 12(1): 166-73, 2013 Jan.
Article in English | MEDLINE | ID: mdl-22949107

ABSTRACT

The etiopathogenesis of polymorphic light eruption (PLE) has been linked to impaired UV-immunosuppression, Langerhans cell (LC) retention, and an absence of neutrophil infiltration into UV-exposed PLE skin. We have previously shown that photohardening restores the impaired neutrophil responsiveness to the chemoattractants leucotriene B4 and formyl-methionyl-leucyl-phenylalanin in PLE patients. The aim of this study was to investigate whether photohardening modulates baseline chemokine and cytokine levels which would alter chemoresponsiveness and hence immune function in PLE patients. Sixteen PLE patients received photohardening therapy for 4-9 weeks by 311 nm UVB. Plasma samples were taken both before and within 48 h of the penultimate phototherapeutic exposure. Plasma from these 16 patients, 8 non-irradiated PLE patients, and 14 control subjects was analyzed for IL-1ß, CXCL8 (IL-8), IL-10, IL-17, TNF, CCL2 (MCP-1), CCL5 (RANTES), CCL11 (eotaxin), and CCL22 (MDC). These cytokines and chemokines were measured in early spring (March to April) and again in late spring (April to June). PLE patients had a significantly elevated level of CCL11 (p = 0.003) and IL-1ß (p = 0.002) in early spring (before phototherapy). In late spring, after phototherapy, PLE patients had significantly elevated CCL2 (p = 0.002) and TNF (p = 0.002) but a trend for lowered plasma levels of CXCL8 (p = 0.021). When comparing the cytokine shifts from early to late spring, while healthy controls and non-UV-irradiated PLE patients showed an increase, PLE patients undergoing photohardening exhibited a trend for decrease in IL-1ß (p = 0.012). Taken together, our results indicate that photohardening may alter the complex cytokine milieu in PLE, in particular via IL-1ß, helping to normalise the pathophysiologic response to subsequent UV exposure.


Subject(s)
Chemokines/blood , Cytokines/blood , Photosensitivity Disorders/metabolism , Adolescent , Adult , Chemokine CCL11/blood , Chemokine CCL2/blood , Female , Humans , Interleukin-1beta/blood , Interleukin-8/blood , Male , Middle Aged , Photosensitivity Disorders/pathology , Photosensitivity Disorders/therapy , Phototherapy , Tumor Necrosis Factor-alpha/blood , Ultraviolet Rays , Young Adult
11.
Nanotoxicology ; 6(4): 424-39, 2012 Jun.
Article in English | MEDLINE | ID: mdl-21627401

ABSTRACT

Cytotoxicity screening is a common technique in drug compound screening for the identification of adverse cellular effects. Nanoparticles may cause interference in these assays. For the interpretation of cytotoxicity data it is important to study also the influence of other factors like pre-treatment of the nanoparticles, the choice of the cell culture medium and type of cell used for testing. Carboxyl polystyrene particles (CPS, 20-1000 nm) were physicochemically characterized and cytotoxicity assessed with seven screening assays in 20 cell lines, which differed in species, growth pattern, cell size, doubling time, embryonic origin and capacity for phagocytosis. Small CPS acted more cytotoxic in all cell lines, larger CPS only in phagocytic cells. Small differences in cytotoxicity were noted between the screening assays. Growth pattern and cell size determined cytotoxicity more than proliferation rate and embryonic origin of cells. Non-adherent cells, cells of mesenchymal origin and with high proliferation rate may be more susceptible to damage by nanoparticles.


Subject(s)
Cell Line , Cell Survival/drug effects , Nanoparticles/chemistry , Nanoparticles/toxicity , Animals , Cattle , Humans , Mice , Particle Size , Phagocytes/cytology , Phagocytes/drug effects , Polystyrenes/chemistry , Polystyrenes/toxicity , Rats , Toxicity Tests/methods
12.
Invest Ophthalmol Vis Sci ; 52(11): 8295-9, 2011 Oct 21.
Article in English | MEDLINE | ID: mdl-21911588

ABSTRACT

PURPOSE: Uveitis is a major cause for visual impairment. Inflammation-related gene polymorphisms have previously been shown to confer susceptibility to different types of uveitis. Recently, IL-2 receptor alpha (IL2RA, also called CD25) and IL-7 receptor alpha (IL7RA) gene variants (rs2104286, rs12722489, and rs6897932) have been identified to play an essential role in the pathogenesis of immune-mediated diseases. Their role in uveitis, however, has not yet been studied. The present study was set to investigate a hypothesized association of these gene polymorphisms and the presence of either intermediate or HLA-B27-associated acute anterior uveitis. METHODS: One hundred forty-five patients with HLA-B27-associated acute anterior uveitis (AAU), 84 patients with intermediate uveitis, 132 HLA-B27-negative controls, and 61 HLA-B27-positive controls were enrolled. Determination of genotypes was done by polymerase chain reaction. RESULTS: The frequency of carriers of the minor allele for rs2104286 was significantly lower in patients with intermediate uveitis compared with HLA-B27 positive and negative controls combined (P = 0.006). Frequencies of the minor allele for rs2104286 did not differ significantly in patients with HLA-B27-associated uveitis (28.3%) when compared with HLA-B27-negative controls (24.2%; P = 0.29) and HLA-B27-positive controls (30.3%; P = 0.72). The rs12722489 and rs6897932 polymorphisms were not significantly associated with either investigated uveitis entity (P > 0.005). CONCLUSIONS: These findings suggest an association of the rs2104286 polymorphism with intermediate uveitis, but not with HLA-B27-associated acute anterior uveitis. Because this polymorphism was associated with multiple sclerosis in previous studies, the authors suggest possible parallel pathways between multiple sclerosis and intermediate uveitis but not HLA-B27-associated uveitis.


Subject(s)
Genetic Predisposition to Disease/genetics , Interleukin-2 Receptor alpha Subunit/genetics , Multiple Sclerosis/genetics , Polymorphism, Genetic/genetics , Uveitis, Anterior/genetics , Acute Disease , Adolescent , Adult , Female , Gene Frequency , Genotype , HLA-B27 Antigen/genetics , Humans , Male , Middle Aged , Young Adult
13.
PLoS One ; 6(6): e20842, 2011.
Article in English | MEDLINE | ID: mdl-21698247

ABSTRACT

BACKGROUND: Double sensitization (DS) to bee and vespid venom is frequently observed in the diagnosis of hymenoptera venom allergy, but clinically relevant DS is rare. Therefore it is sophisticated to choose the relevant venom for specific immunotherapy and overtreatment with both venoms may occur. We aimed to compare currently available routine diagnostic tests as well as experimental tests to identify the most accurate diagnostic tool. METHODS: 117 patients with a history of a bee or vespid allergy were included in the study. Initially, IgE determination by the ImmunoCAP, by the Immulite, and by the ADVIA Centaur, as well as the intradermal test (IDT) and the basophil activation test (BAT) were performed. In 72 CAP double positive patients, individual IgE patterns were determined by western blot inhibition and component resolved diagnosis (CRD) with rApi m 1, nVes v 1, and nVes v 5. RESULTS: Among 117 patients, DS was observed in 63.7% by the Immulite, in 61.5% by the CAP, in 47.9% by the IDT, in 20.5% by the ADVIA, and in 17.1% by the BAT. In CAP double positive patients, western blot inhibition revealed CCD-based DS in 50.8%, and the CRD showed 41.7% of patients with true DS. Generally, agreement between the tests was only fair and inconsistent results were common. CONCLUSION: BAT, CRD, and ADVIA showed a low rate of DS. However, the rate of DS is higher than expected by personal history, indicating that the matter of clinical relevance is still not solved even by novel tests. Furthermore, the lack of agreement between these tests makes it difficult to distinguish between bee and vespid venom allergy. At present, no routinely employed test can be regarded as gold standard to find the clinically relevant sensitization.


Subject(s)
Bee Venoms/toxicity , Hypersensitivity/diagnosis , Wasp Venoms/toxicity , Adult , Diagnosis, Differential , Female , Humans , Hypersensitivity/etiology , Male , Middle Aged
14.
Eur Arch Otorhinolaryngol ; 268(8): 1201-1204, 2011 Aug.
Article in English | MEDLINE | ID: mdl-21221617

ABSTRACT

UNLABELLED: Considerable clinical and experimental data suggest that vitamin D plays a role in pathogenesis and progression of cancer; nevertheless clinical data for head and neck squamous cell carcinoma (HNSCC) are not available. The aim of our study was to associate tumor and clinical characteristics with status of vitamin D [25-hydroxyvitamin D (25(OH)D)]. 88 patients with newly diagnosed squamous cell carcinoma of the head and neck were included in the study. A blood draw was taken at the time of diagnosis. The observation period lasted from 2006 until 2010. RESULTS: When compared to a cohort from an epidemiological study, serum levels of 25(OH)D were significantly reduced in patients with HNSCC. We furthermore found disease-free survival, as well as overall survival times to be significantly associated with 25(OH)D levels. In conclusion, results from our study suggest an influence of vitamin D status on cancer incidence, as well as on mortality of HNSCC.


Subject(s)
Biomarkers, Tumor/blood , Carcinoma, Squamous Cell/mortality , Head and Neck Neoplasms/mortality , Vitamin D/blood , Aged , Austria/epidemiology , Carcinoma, Squamous Cell/blood , Disease-Free Survival , Female , Follow-Up Studies , Head and Neck Neoplasms/blood , Humans , Male , Middle Aged , Morbidity/trends , Prognosis , Retrospective Studies , Squamous Cell Carcinoma of Head and Neck , Survival Rate/trends , Time Factors
15.
J Heart Lung Transplant ; 29(12): 1352-7, 2010 Dec.
Article in English | MEDLINE | ID: mdl-20591692

ABSTRACT

BACKGROUND: After heart transplantation (HTx), endomyocardial biopsy (EMB) is currently the standard method to diagnose acute graft rejection. A non-invasive marker of rejection would be desirable as an alternative or to permit more selective use of the costly and invasive EMB. METHODS: In this retrospective study, outcomes of routinely taken EMBs were used to select 28 patients after HTx EMB Grade 0R (8 patients), 1R (9 patients) or 2R (11 patients). For these patients, myeloperoxidase (MPO) and carbonyl proteins (CP) in serum were measured using enzyme-linked immunoassay (ELISA). RESULTS: MPO and CP levels in post-HTx patients with Grade 2R rejection were significantly (MPO: p < 0.01; CP: p < 0.001) elevated at the time of rejection compared with levels 1 month earlier. MPO and CP levels predicted Grade 2R rejection and the best cut-off point was 237.5 µg/l for MPO and 222.5 pmol/mg for CP, respectively. Clinically most important was the marked increase (doubling of basic values within 1 month) of MPO and CP levels in cases of Grade 2R rejection in post-HTx patients. CONCLUSIONS: MPO and CP seem to be appropriate parameters to monitor rejection events non-invasively and to minimize the application of EMBs after HTx.


Subject(s)
C-Reactive Protein/analysis , Graft Rejection/diagnosis , Heart Transplantation , Natriuretic Peptide, Brain/blood , Peptide Fragments/blood , Peroxidase/blood , Protein Carbonylation , Adult , Aged , Biomarkers/blood , Biopsy/methods , Female , Graft Rejection/blood , Graft Rejection/enzymology , Humans , Male , Middle Aged , Myocardium/pathology , Predictive Value of Tests , Retrospective Studies
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