| Literature DB >> 5466318 |
D M McLean, M A Crawford, S R Ladyman, R R Peers, K W Purvin-Good.
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Year: 1970 PMID: 5466318 DOI: 10.1093/oxfordjournals.aje.a121206
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897