L L Veet1, J A Shea, J Ende. Show Affiliations » 1. University of Pennsylvania, Pennsylvania, USA.
Abstract
Year: 1997 PMID: 17939011 PMCID: PMC1497165 DOI: 10.1046/j.1525-1497.1997.07115.x
Source DB: PubMed Journal: J Gen Intern Med ISSN: 0884-8734 Impact factor: 5.128