R Hull1. Show Affiliations » 1. Department of General Practice, University of Birmingham, Birmingham BT15 2TH.
Abstract
Year: 1987 PMID: 20742883 PMCID: PMC1247441 DOI: 10.1136/bmj.295.6597.539
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623