| Literature DB >> 24018844 |
Miguel A Hernán, Sonia Hernández-Díaz, James M Robins.
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Year: 2013 PMID: 24018844 PMCID: PMC3860874 DOI: 10.7326/0003-4819-159-8-201310150-00709
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391