| Literature DB >> 5458216 |
L E Davis, G G Caldwell, R E Lynch, R E Bailey, T D Chin.
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Year: 1970 PMID: 5458216 DOI: 10.1093/oxfordjournals.aje.a121203
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897