| Literature DB >> 6342368 |
W E Broadhead, B H Kaplan, S A James, E H Wagner, V J Schoenbach, R Grimson, S Heyden, G Tibblin, S H Gehlbach.
Abstract
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Year: 1983 PMID: 6342368 DOI: 10.1093/oxfordjournals.aje.a113575
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897