| Literature DB >> 4951557 |
R H Alford, J A Kasel, J R Lehrich, V Knight.
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Year: 1967 PMID: 4951557 DOI: 10.1093/oxfordjournals.aje.a120723
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897