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1.
The birth certificate as an efficient means of identifying children conceived with the help of infertility treatment.
Am J Epidemiol
; 174(2): 211-8, 2011 Jul 15.
Artículo
en Inglés
| MEDLINE | ID: mdl-21705488
2.
Association of corticosteroid dose and route of administration with risk of treatment failure in acute exacerbation of chronic obstructive pulmonary disease.
JAMA
; 303(23): 2359-67, 2010 Jun 16.
Artículo
en Inglés
| MEDLINE | ID: mdl-20551406
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