BMJ. 1992 Mar 21;304(6829):777. doi: 10.1136/bmj.304.6829.777-b.
BMJ (Clinical research ed.)
G Owen
PMID: 1571696 PMCID: PMC1881570 DOI: 10.1136/bmj.304.6829.777-b Free PMC Article
[No abstract available.]