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2.
BMC Infect Dis ; 23(1): 75, 2023 Feb 06.
Article in English | MEDLINE | ID: covidwho-2227210

ABSTRACT

BACKGROUND: Previous studies have shown that non-critically ill COVID-19 patients co-infected with other respiratory viruses have poor clinical outcomes. However, limited studies focused on this co-infections in critically ill patients. This study aims to evaluate the clinical outcomes of critically ill patients infected with COVID-19 and co-infected by other respiratory viruses. METHODS: A multicenter retrospective cohort study was conducted for all adult patients with COVID-19 who were hospitalized in the ICUs between March, 2020 and July, 2021. Eligible patients were sub-categorized into two groups based on simultaneous co-infection with other respiratory viruses throughout their ICU stay. Influenza A or B, Human Adenovirus (AdV), Human Coronavirus (i.e., 229E, HKU1, NL63, or OC43), Human Metapneumovirus, Human Rhinovirus/Enterovirus, Middle East Respiratory Syndrome Coronavirus (MERS-CoV), Parainfluenza virus, and Respiratory Syncytial Virus (RSV) were among the respiratory viral infections screened. Patients were followed until discharge from the hospital or in-hospital death. RESULTS: A total of 836 patients were included in the final analysis. Eleven patients (1.3%) were infected concomitantly with other respiratory viruses. Rhinovirus/Enterovirus (38.5%) was the most commonly reported co-infection. No difference was observed between the two groups regarding the 30-day mortality (HR 0.39, 95% CI 0.13, 1.20; p = 0.10). The in-hospital mortality was significantly lower among co-infected patients with other respiratory viruses compared with patients who were infected with COVID-19 alone (HR 0.32 95% CI 0.10, 0.97; p = 0.04). Patients concomitantly infected with other respiratory viruses had longer median mechanical ventilation (MV) duration and hospital length of stay (LOS). CONCLUSION: Critically ill patients with COVID-19 who were concomitantly infected with other respiratory viruses had comparable 30-day mortality to those not concomitantly infected. Further proactive testing and care may be required in the case of co-infection with respiratory viruses and COVID-19. The results of our study need to be confirmed by larger studies.


Subject(s)
COVID-19 , Coinfection , Respiratory Syncytial Virus, Human , Respiratory Tract Infections , Viruses , Adult , Humans , Cohort Studies , Respiratory Tract Infections/epidemiology , Retrospective Studies , Coinfection/epidemiology , Hospital Mortality , Rhinovirus
3.
BMC Infect Dis ; 22(1): 950, 2022 Dec 17.
Article in English | MEDLINE | ID: covidwho-2196085

ABSTRACT

BACKGROUND: Patients' race and ethnicity may play a role in mortality from Covid-19. Studies in China, the US, and Europe have been conducted on the predictors of Covid-19 mortality, yet in the EMR countries, such studies are scarce. Therefore, we aimed to describe the hospitalization rate, ICU-admission, and in-hospital mortality of Covid-19 and predictors of in-hospital mortality in Saudi Arabia. METHODS: E-medical records were examined for all Covid-19 patients diagnosed in five tertiary hospitals affiliated with the Saudi-National Guard-Health Affairs during March 21, 2020, and September 12, 2021, based on a positive SARS-CoV-2 RT-PCR test, (n = 35,284). Data were collected on patients' characteristics, comorbidities, laboratory findings, hospitalization, ICU admission, and in-hospital and overall mortality. Logestic regressions were used to identify the independent predictors of in-hospital mortality. The best laboratory parameters cut-off values to predict in-hospital mortality were identified using the area under the receiver operating characteristic curve (AUC). Significance was considered at p < 0.05. RESULTS: Of all 35,284 Covid-19 patients, 81.8% were adults and 21.7% were hospitalized. Compared to non-hospitalized patients, hospitalized patients were more of female gender (52.1% versus 47.3%, p < 0.001) and had higher mean age (p < 0.001), higher mean BMI (p < 0.001), and higher rates of: diabetes (p < 0.001), hypertension (p < 0.001), ischemic heart disease (p < 0.001), cancer (p < 0.001), COPD (p < 0.001) and asthma (p = 0.011). The study showed 3.1% overall case-fatality, 20.3% ICU admission rate, and 9.7% in-hospital mortality. Predictors of in-hospital mortality among adult patients were; patients' age ≥ 70 years (OR = 6.93, 95% CI 1.94-24.79), ischemic heart disease (OR = 1.80, 95% CI 1.05-3.09), ICU admission (OR = 24.38, 95% CI 15.64-38.01), abnormal C-reactive protein "CRP" (OR = 1.85, 95% CI 1.08-3.16), abnormal D-dimer (OR = 1.96, 95% CI 1.15-3.36), lymphopenia (OR = 2.76, 95% CI 2.03-3.3.76), high neutrophil count (OR = 2.10, 95% CI 1.54-2.87), and abnormal procalcitonin (OR = 3.33, 95% CI 1.88-5.90). The best laboratory parameters cut-off values to predict in-hospital mortality were CRP > 72.25 mg/L (AUC = 0.64), D-dimer > 1125 µg/L (AUC = 0.75), neutrophils count > 5,745 × 10^9/L (AUC = 0.70), lymphocytic count < 1.10 × 10^9/L (AUC = 0.72), and procalcitonin > 0.18 ng/mL (AUC = 0.76). CONCLUSIONS: Rates of hospitalization, ICU-admission, in-hospital mortality and overall case fatality were nearly comparable to the rates in western countries. Early interventions are necessary for high-risk Covid-19 patients, especially elderly patients and those with cardiac diseases.


Subject(s)
COVID-19 , Myocardial Ischemia , Adult , Humans , Female , Aged , SARS-CoV-2 , Hospital Mortality , Procalcitonin , Saudi Arabia/epidemiology , Retrospective Studies , Hospitalization
4.
J Clin Med ; 11(14)2022 Jul 20.
Article in English | MEDLINE | ID: covidwho-1938868

ABSTRACT

Coronavirus disease 2019 (COVID-19) survivors can have lasting signs and symptoms, including various organ damage, indicating that COVID-19 can be a chronic illness. The current study aims to compare the 30-day hospital readmission and death rate of patients admitted to the hospital with COVID-19 and pneumonia due to other causes. A retrospective cohort study was conducted using data from the Saudi National Guard Health Affairs (NGHA). Records of patients admitted with COVID-19 between 1 March 202 and 31 December 2020 (n = 3597) and pneumonia during 2017 and 2019 (n = 6324) were retrieved and analyzed. We compared the likelihood of 30-day hospital readmission, intensive care unit (ICU) admission, and death between the two groups. Compared with the control group, COVID-19 patients had higher odds of 30-day readmission (odds ratio 1.90, 95% confidence interval 1.61-2.24), higher risk of ICU transfer (hazard ratio 1.85, 95% confidence interval 1.65-2.07), more extended hospital stay (7 vs. 4 days), but less risk of death (hazard ratio 0.18, 95% confidence interval 0.14-0.24). The findings that hospital readmission was higher in COVID-19 recovered patients than in other pneumonia patients inform the current discussion about readmission and death in COVID-19 patients.

5.
Saudi J Med Med Sci ; 10(2): 111-116, 2022.
Article in English | MEDLINE | ID: covidwho-1863110

ABSTRACT

Background: Road traffic injuries are a leading cause of death in Saudi Arabia. Studies have examined the impact of the COVID-19 pandemic on traffic injuries treated in healthcare institutions, but its impact on patients seeking emergency medical transport for traffic injuries remains unclear. Objective: This study aimed to determine changes in traffic injuries' distribution and outcomes among patients seeking emergency medical transport before, during, and after the COVID-19 restrictions were imposed in Saudi Arabia. Methods: This is a nationwide retrospective study of all injuries reported to the Saudi Red Crescent Authority (SRCA) between January 1st, 2020, and May 31st, 2021. The cases in the study were categorized based on the following three time periods: (1) Pre-restriction (January 1 to March 23, 2020), (2) restriction (March 24 to June 21, 2020), and (3) post-restriction (June 22, 2020, to May 31, 2021). Results: A total of 142,763 cases of traffic-related injuries were recorded at the SRCA during the study period: pre-restriction, 27,811 (19.5%); restriction, 14,414 (10.1%); post-restriction, 100,538 (70.4%). Males accounted for most cases throughout the study period, but a significant increase in the number of females was observed in the post-restriction period compared with the first two timeframes (12.2% vs. 3.4% and 3.4%, respectively; P < 0.01). During the restriction period, the rate of mortality was the highest, and rollover crashes were significantly higher (18.2% vs. 14.0% and 14.6%; P < 0.01). Overall, pedestrians were almost three times more likely to die following injuries than occupants or drivers (OR = 2.7). Conclusions: Further prevention programs to reduce traffic injuries are needed to improve traffic safety and improve population health.

6.
J Infect Public Health ; 15(5): 573-577, 2022 May.
Article in English | MEDLINE | ID: covidwho-1773509

ABSTRACT

BACKGROUND: Two vaccines for COVID-19 have been approved and administered in the Kingdom of Saudi Arabia (KSA); Pfizer-BioNtech BNT162b2 and AstraZeneca-Oxford AZD1222 vaccines. The purpose of this study was to describe the real-world data on the outcome of single dose of these COVID-19 vaccines in a large cohort in KSA and to analyse demographics and co-morbidities as risk factors for infection post one-dose vaccination. METHODS: In this prospective cohort study, a total of 18,543 subjects received one dose of either of the vaccines at a vaccination centre in KSA, and were followed up for three to eight months. Data were collected from three sources; clinical data from medical records, adverse events (AEs) from a self-reporting system, and COVID-19 infection data from the national databases. The study was conducted during the pandemic restrictions on travel, mobility, and social interactions. RESULTS: The median age of participants was 33 years with an average body mass index of 27.3. The majority were males (60.1%). Results showed that 92.17% of the subjects had no COVID-19 infection post-vaccination as infection post-vaccination was documented for 1452 (7.83%). Diabetes mellitus 03), organ transplantation (p = 0.02), and obesity (p < 0.01) were associated with infection post-vaccination. Unlike vaccine type, being Saudi, male, or obese was associated with the occurrence breakthrough infections more than other parameters. AEs included injection site pain, fatigue, fever, myalgia, headache and was reported by 5.8% of the subjects. CONCLUSION: Single dose COVID-19 vaccines showed a protection rate of 92.17% up to eight months follow-up in this cohort. This rate in AZD1222 was higher than what have been previously reported in effectiveness studies and clinical trials. Obese, male, and Saudi were at higher risk of contracting the infection post-vaccination, Saudi and male might have more social interaction with the public when mobility and social interactions were limited during the pandemic. Side effects and AEs were within what has been reported in clinical trials.


Subject(s)
COVID-19 , Vaccines , Adult , BNT162 Vaccine , COVID-19/prevention & control , COVID-19 Vaccines/adverse effects , ChAdOx1 nCoV-19 , Female , Follow-Up Studies , Humans , Male , Obesity/epidemiology , Prospective Studies , SARS-CoV-2 , Saudi Arabia/epidemiology
7.
Frontiers in public health ; 9, 2021.
Article in English | EuropePMC | ID: covidwho-1660927

ABSTRACT

The COVID-19 pandemic has had a major impact on various health conditions. The objective of this study was to assess the impact of the COVID-19 pandemic on body weight and body mass index (BMI) in Saudi Arabia. We used electronic health records obtained from a healthcare system representing five hospitals in three different regions in the Kingdom to examine the change in weight utilizing a longitudinal design. The study included all adults who had visited outpatient clinics in two different time points, pre-2020 (years 2018 and 2019 prior to COVID-19) and post-2020 (the year 2021). Weight and BMI changes in percentages were described. Also, bivariate chi-square test, paired t-test, and multivariable multinomial logistic regression model were used for the analyses. A total of 165,279 individuals were included in the study. On average, a significant weight gain of 0.33 kg (95% CI: 0.29–0.36) was observed in our study. Approximately 10% of the population had shifted to either overweight or obese BMI classes during the study period, as 4.8% of those with normal BMI pre-2020 had shifted to overweight or obese classes at post-2020, and 5.1% of those who were overweight had shifted to obese class. Also, 23.1% of the population had gained 5% or more of their pre-2020 weight, while 17% had lost 5% or more. Young individuals were over three times more likely to gain 5% or more than older individuals (OR: 3.34;95% CI: 3.12–3.56). Females had 24% higher odds to gain 5% or more of their pre-2020 weight than males (OR: 1.24;95% CI: 1.21–1.27). Diabetics were 27% more likely to lose 5% or more than non-diabetics (OR: 1.27;95% CI: 1.23–1.31). Our findings provide insights into the impact of COVID-19 on weight and population health. Further investment in interventions for weight management is warranted during similar circumstances such as lockdowns due to infection waves or new variants. Future studies are also needed to explore the modifications that have occurred during the pandemic in the weight-related lifestyle factors such as dietary choices and physical activity levels.

8.
J Infect Public Health ; 15(2): 261-269, 2022 Feb.
Article in English | MEDLINE | ID: covidwho-1620857

ABSTRACT

INTRODUCTION: To mitigate morbidity, mortality, and impacts of COVID-19 on health, it was essential to implement a comprehensive framework for COVID-19 control and prevention. A well-recognized tool from the field of injury prevention known as the Haddon matrix was utilized. The matrix states that any accident is affected by the host, agent, and environment. Another well-recognized tool used by the national fire protection association known as the Community risk reduction tool (CRR). The (CRR) tool utilizes the Five E's of Community Risk Reduction. AIM OF THE STUDY: To describe the risk factors that increase the susceptibility and the severity of COVID-19 infection based on the Haddon matrix and the proposed prevention strategies by the CRR tool by using the combined model. METHODOLOGY: We reviewed the literature to assess known factors contributing to COVID-19 susceptibility, infection, and severity of infection. We then used the Haddon matrix to structure, separating human factors from technical and environmental details and timing. We then used the community risk reduction (CRR) model to set all responses and control measures for each element obtained from the Haddon matrix tool. Subsequently, we incorporated both tools to develop the combined model. CONCLUSION: we proposed and implemented a combined model that utilizes the CRR model as the systematic strategy for the more theoretical framework of Haddon's matrix. Combining both models was practical and helpful in planning the preparedness and control of the COVID-19 pandemic in Saudi Arabia that can be generalized to national and international levels.


Subject(s)
COVID-19 , Humans , Pandemics/prevention & control , Risk Factors , Risk Reduction Behavior , SARS-CoV-2
9.
Front Public Health ; 9: 704294, 2021.
Article in English | MEDLINE | ID: covidwho-1334975

ABSTRACT

Background: The COVID-19 pandemic has placed an enormous strain on global health. Due to precautionary measures, the epidemiology of health conditions may have been affected. Saudi Arabia imposed a lockdown order on March 25, 2020. This study investigated the impact of the pandemic lockdown on injuries in a level-I trauma center in King Abdulaziz Medical City, Riyadh, Saudi Arabia. Methods: This retrospective study identified all injured patients seeking emergency care during the lockdown period (March 25-June 21, 2020) and a similar period in two previous year (March 25-June 21) 2018 and 2019. The collected data included patients' demographics, injury types, mechanisms, and health outcomes. Results: Two hundred sixty nine injured patients sought emergency care during the lockdown, while 626 and 696 patients were treated in the same period of 2018 and 2019, respectively. There was a significant reduction in motor vehicle crashes (OR: 0.47; 95% CI: 0.31-0.73) and burns (OR: 0.24; 95% CI: 0.08-0.66), coupled with a significant increase in assault injuries (OR: 2.20; 95% CI: 1.30-3.74) in the lockdown period compared to 2019. Apart from the intensive care unit (ICU) admission and hospital length of stay, there were no differences between the two periods in the health outcomes. ICU admission was significantly reduced by 57% during the lockdown period (OR: 0.43; 95% CI: 0.22-0.83). Mechanisms of injuries were not significant predictors of deaths or ICU admission or both in the lockdown period. Conclusion: The COVID-19 lockdown had a clear impact on the volume and mechanisms of injuries. The findings highlight that injury risk factors are modifiable and emphasize the importance of public health measures for preventing injuries and the significance of maintaining trauma services capacity during pandemics.


Subject(s)
COVID-19 , Trauma Centers , Communicable Disease Control , Humans , Pandemics , Retrospective Studies , SARS-CoV-2 , Saudi Arabia/epidemiology
10.
J Infect Public Health ; 14(7): 832-838, 2021 Jul.
Article in English | MEDLINE | ID: covidwho-1265761

ABSTRACT

BACKGROUND: Estimated seroprevalence of Coronavirus Infectious Disease 2019 (COVID-19), caused by the Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2) is a critical evidence for a better evaluation of the virus spread and monitoring the progress of COVID-19 pandemic in a population. In the Kingdom of Saudi Arabia (KSA), SARS-CoV-2 seroprevalence has been reported in specific regions, but an extensive nationwide study has not been reported. Here, we report a nationwide study to determine the prevalence of SARS-CoV-2 in the population of KSA during the pandemic, using serum samples from healthy blood donors, non-COVID patients and healthcare workers (HCWs) in six different regions of the kingdom, with addition samples from COVID-19 patients. METHODS: A total of 11,703 serum samples were collected from different regions of the KSA including; 5395 samples from residual healthy blood donors (D); 5877 samples from non-COVID patients collected through residual sera at clinical biochemistry labs from non-COVID patients (P); and 400 samples from consented HCWs. To determine the seroprevalence of SARS-CoV-2, all serum samples, in addition to positive control sera from RT-PCR confirmed COVID-19 patients, were subjected to in-house ELISA with a sample pooling strategy, which was further validated by testing individual samples that make up some of the pools, with a statistical estimation method to report seroprevalence estimates. RESULTS: Overall (combining D and P groups) seroprevalence estimate was around 11% in Saudi Arabia; and was 5.1% (Riyadh), 1.5% (Jazan), 18.4% (Qassim), 20.8% (Hail), 14.7% (ER; Alahsa), and 18.8% in Makkah. Makkah samples were only D group and had a rate of 24.4% and 12.8% in the cities of Makkah and Jeddah, respectively. The seroprevalence in Saudi Arabia across the sampled areas would be 12 times the reported COVID-19 infection rate. Among HCWs, 7.5% (4.95-10.16 CI 95%) had reactive antibodies to SARS-CoV-2 without reporting any previously confirmed infection. This was higher in HCWs with hypertension. The study also presents the demographics and prevalence of co-morbidities in HCWs and subset of non-COVID-19 population. INTERPRETATION: Our study estimates the overall national serological prevalence of COVID-19 in Saudi Arabia to be 11%, with an apparent disparity between regions. This indicates the prevalence of asymptomatic or mild unreported COVID-19 cases.


Subject(s)
COVID-19 , SARS-CoV-2 , Antibodies, Viral , Humans , Pandemics , Saudi Arabia/epidemiology , Seroepidemiologic Studies
11.
Eur J Psychotraumatol ; 12(1): 1875642, 2021 Feb 22.
Article in English | MEDLINE | ID: covidwho-1137912

ABSTRACT

Background: The impact of the COVID-19 pandemic on populations' mental health has started to emerge. Objectives: To describe the mental health trends of the risk of major depressive disorder (MDD) and generalized anxiety disorder (GAD) between May and August 2020. It also compares the results with pre-COVID-19 results and identifies risk factors associated with increased likelihood of being at risk of MDD and GAD. Method: This study utilizes repeated cross-sectional design, at national-level coverage of mental health screenings via computer-assisted phone interviews conducted in four waves monthly (between May and August 2020). Arabic-speaking adults from Saudi Arabia were recruited via a random phone list. The questionnaire includes the Arabic version of the Patient Health Questionnaire (PHQ-9) and the General Anxiety Disorder-7 (GAD-7). Pre-COVID-19 comparison was done using the PHQ-2 score to allow for comparison with a previous and similar national study conducted in 2018. Results: Across the four waves, 16,513 participants completed the interviews, with an overall response rate of 81.3%. The weighted national prevalence of people at risk of MDD was 14.9% overall, and 13.8%, 13.6%, 16.8%, and 15.3% in Waves 1, 2, 3, and 4, respectively. The weighted national prevalence of people at risk of GAD was 11.4%, overall, and 10.9%, 10.7%, 12.4%, and 11.7% in Waves 1, 2, 3, and 4, respectively. The weighted national proportion of individuals who were at risk of MDD and GAD at the same time was 7.4% overall. The risk of MDD on PHQ-2 increased by 71.2%, from 12.5% in 2018 to 21.4% in 2020. Conclusions: The risks of MDD and GAD in this study are relatively high. These results can help decision makers to understand the impact of the COVID-19 pandemic on the population's mental health and the most-impacted subgroups.


Antecedentes: El impacto de la pandemia COVID-19 en la salud mental de la población ha comenzado a emerger.Objetivos: Describir las tendencias en salud mental del riesgo de tener un trastorno depresivo mayor (MDD por sus siglas en inglés) y un trastorno de ansiedad generalizado (GAD por sus siglas en inglés) entre Mayo y Agosto de 2020. También compara los resultados con los resultados pre COVID-19 e identifica factores de riesgo asociados con el aumento de la probabilidad de estar en riesgo de sufrir MDD y GADMétodo: Este estudio utiliza un diseño transversal repetido, a un nivel de cobertura nacional de tamizaje sobre salud mental vía entrevistas telefónicas asistidas por computador, conducidas en 4 olas mensualmente (entre Mayo y agosto de 2020). Adultos que hablasen árabe de Arabia Saudita fueron reclutados mediante una lista aleatoria de teléfonos. El cuestionario incluía la versión árabe del Cuestionario de Salud del Paciente (PHQ-9) y de La Escala del Trastorno de Ansiedad Generalizada (GAD-7). Se hicieron comparaciones pre-COVID 19 usando el puntaje del PHQ-2 para permitir la comparación con un estudio previo nacional de características similares que fue realizado el 2018.Resultados: A través de las cuatro olas, 16.513 participantes completaron las entrevistas, con una tasa de respuesta promedio de 81.3%. La prevalencia nacional calculada de personas en riesgo para MDD fue de 14.9% en general y de 13.8%, 13.6%, 16.8% y 15.3% en Olas 1, 2, 3 y 4 respectivamente. La prevalencia nacional calculada de personas en riesgo para GAD fue 11.4% en general y 10.9%, 10.7%, 12.4% y 11.7% en Olas 1, 2, 3 y 4 respectivamente. La proporción nacional calculada de individuos que estaban en riesgo para MDD y GAD al mismo tiempo fue de 7.4% en general. El riesgo de MDD según el PHQ-2 aumentó en un 71.2%, de 12.5% en 2018 a 21.4% en 2020.Conclusiones: El riesgo de MDD y GAD encontrado en este estudio es relativamente alto. Estos resultados pueden ayudar a entender a las personas que toman decisiones del impacto de la pandemia COVID-19 en la salud mental de la población y en los subgrupos más impactados.

12.
JMIR Res Protoc ; 9(11): e23748, 2020 Nov 26.
Article in English | MEDLINE | ID: covidwho-949053

ABSTRACT

BACKGROUND: The COVID-19 outbreak can potentially be categorized as a traumatic event. Public health surveillance is one of the cornerstones of public health practice, and it empowers decision makers to lead and manage public health crises and programs more effectively by providing timely and useful evidence. OBJECTIVE: This paper presents the protocol for a study that aims to identify, track, and monitor trends in the population in Saudi Arabia at risk of major depressive disorders and anxiety during the COVID-19 pandemic. METHODS: This study utilizes continuous, cross-sectional, national-level mental health screening via computer-assisted phone interviews, conducted in four waves on a monthly basis (between May and August 2020). Arabic-speaking adults, aged ≥18 years, and living in Saudi Arabia were recruited via a random phone list. This surveillance system used the proportional quota sampling technique to achieve an equal distribution of participants, stratified by age and gender, and region, within and across the 13 administrative regions of Saudi Arabia. A sample size of 4056 participants per wave was calculated to achieve enough power to detect changes in mental health status. The questionnaire includes the Arabic version of the Patient Health Questionnaire-9 (PHQ-9) to measure depressive symptoms and the General Anxiety Disorder-7 (GAD-7) to measure anxiety. In addition, it will collect data on sociodemographic variables and potential risk factors. RESULTS: Study recruitment began in May 2020. The data analysis was completed in October 2020, and the final report is expected to be published by the end of December 2020. CONCLUSIONS: Monitoring the population's mental health status during the COVID-19 pandemic will inform decision makers of any potential deterioration in mental health on a national level and among subgroups, including across regions, age groups, and gender groups. It will allow decision makers to recognize issues and intervene sooner. It will also provide valuable scientific data to help understand the effects of epidemics and pandemics on mental health. As far as we know, this is the only study that attempts to monitor the mental health status of the general population on a monthly basis. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/23748.

13.
EClinicalMedicine ; 26: 100512, 2020 Sep.
Article in English | MEDLINE | ID: covidwho-729934
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