| Literature DB >> 19423867 |
John S Brownstein1, Clark C Freifeld, Lawrence C Madoff.
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Year: 2009 PMID: 19423867 PMCID: PMC2917042 DOI: 10.1056/NEJMp0900702
Source DB: PubMed Journal: N Engl J Med ISSN: 0028-4793 Impact factor: 91.245