| Literature DB >> 6058398 |
S A Plotkin, J Farquhar, M Katz, T H Ingalls.
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Year: 1967 PMID: 6058398 DOI: 10.1093/oxfordjournals.aje.a120757
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897