| Literature DB >> 5060373 |
T M Mack, D B Thomas, A Ali, M Muzaffar Khan.
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Year: 1972 PMID: 5060373 DOI: 10.1093/oxfordjournals.aje.a121380
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897