| Literature DB >> 4905832 |
R W Armstrong, T Fodor, G T Curlin, A B Cohen, G K Morris, W T Martin, J Feldman.
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Year: 1970 PMID: 4905832 DOI: 10.1093/oxfordjournals.aje.a121140
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897