| Literature DB >> 15547074 |
M J Pappachan, M Sheela, K P Aravindan.
Abstract
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Year: 2004 PMID: 15547074 PMCID: PMC1732650 DOI: 10.1136/jech.2003.018556
Source DB: PubMed Journal: J Epidemiol Community Health ISSN: 0143-005X Impact factor: 3.710