| Literature DB >> 4631893 |
R Y Dodd, P V Holland, L Y Ni, H M Smith, T J Greenwalt.
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Year: 1973 PMID: 4631893 DOI: 10.1093/oxfordjournals.aje.a121487
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897