| Literature DB >> 6058390 |
J C Niederman, J R Henderson, E M Opton, F L Black, K Skvrnova.
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Year: 1967 PMID: 6058390 DOI: 10.1093/oxfordjournals.aje.a120742
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897