| Literature DB >> 18490691 |
Lawrence S Phillips, Jennifer G Twombly.
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Year: 2008 PMID: 18490691 PMCID: PMC3685435 DOI: 10.7326/0003-4819-148-10-200805200-00011
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391