| Literature DB >> 5395236 |
P E Sartwell, A T Masi, F G Arthes, G R Greene, H E Smith.
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Year: 1969 PMID: 5395236 DOI: 10.1093/oxfordjournals.aje.a121082
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897