| Literature DB >> 9425473 |
L Prieto, R Lamarca, A Casado, J Alonso.
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Year: 1997 PMID: 9425473 PMCID: PMC1060549 DOI: 10.1136/jech.51.5.579-a
Source DB: PubMed Journal: J Epidemiol Community Health ISSN: 0143-005X Impact factor: 3.710