| Literature DB >> 19565127 |
Ross Upshur1, Jerome Singh, Nathan Ford.
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Year: 2009 PMID: 19565127 PMCID: PMC2686205 DOI: 10.2471/blt.08.051698
Source DB: PubMed Journal: Bull World Health Organ ISSN: 0042-9686 Impact factor: 9.408