BMJ. 1988 Dec 17;297(6663):1614. doi: 10.1136/bmj.297.6663.1614-b.
BMJ (Clinical research ed.)
T C Lo, I W Dymock
PMID: 3147110 PMCID: PMC1835285 DOI: 10.1136/bmj.297.6663.1614-b Free PMC Article
[No abstract available.]