| Literature DB >> 5770165 |
T A Welborn, G N Cumpston, K J Cullen, D H Curnow, M G McCall, N S Stenhouse.
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Year: 1969 PMID: 5770165 DOI: 10.1093/oxfordjournals.aje.a120965
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897