| Literature DB >> 23038122 |
M Elizabeth Halloran, Michael G Hudgens.
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Year: 2012 PMID: 23038122 PMCID: PMC3482261 DOI: 10.1097/EDE.0b013e31826d0741
Source DB: PubMed Journal: Epidemiology ISSN: 1044-3983 Impact factor: 4.822