| Literature DB >> 4322315 |
R A Feldman, S Christopher, S George, K R Kamath, T J John.
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Year: 1970 PMID: 4322315 DOI: 10.1093/oxfordjournals.aje.a121218
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897