| Literature DB >> 4353435 |
R A Grossman, D J Gould, T J Smith, D O Johnsen, S Pantuwatana.
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Year: 1973 PMID: 4353435 DOI: 10.1093/oxfordjournals.aje.a121536
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897