| Literature DB >> 5039726 |
G D Friedman, C C Seltzer, A B Siegelaub, R Feldman, M F Collen.
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Year: 1972 PMID: 5039726 DOI: 10.1093/oxfordjournals.aje.a121429
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897