| Literature DB >> 5060375 |
D B Thomas, T M Mack, A Ali, M Muzaffar Khan.
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Year: 1972 PMID: 5060375 DOI: 10.1093/oxfordjournals.aje.a121383
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897