| Literature DB >> 17639230 |
Thomas R Frieden1, John A Sbarbaro.
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Year: 2007 PMID: 17639230 PMCID: PMC2636637 DOI: 10.2471/blt.06.038927
Source DB: PubMed Journal: Bull World Health Organ ISSN: 0042-9686 Impact factor: 9.408