A S Barber, E D Barraclough, W A Gray. Show Affiliations »
Abstract
Mesh: See more » ComputersInformation SystemsNational Library of Medicine (U.S.)Online SystemsSubject HeadingsUnited KingdomUnited States
Year: 1972 PMID: 5066664 PMCID: PMC1787293 DOI: 10.1136/bmj.1.5796.368
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447