| Literature DB >> 9328561 |
M Blettner, J Chang-Claude, T Scheuchenpflug.
Abstract
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Year: 1997 PMID: 9328561 PMCID: PMC1060523 DOI: 10.1136/jech.51.4.465
Source DB: PubMed Journal: J Epidemiol Community Health ISSN: 0143-005X Impact factor: 3.710