| Literature DB >> 4347511 |
H M Foy, M K Cooney, R McMahan, J T Grayston.
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Year: 1973 PMID: 4347511 DOI: 10.1093/oxfordjournals.aje.a121493
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897