Br Med J (Clin Res Ed). 1983 Apr 23;286(6374):1357. doi: 10.1136/bmj.286.6374.1357-a.
British medical journal (Clinical research ed.)
K C McKeown
PMID: 6404462 PMCID: PMC1547595 DOI: 10.1136/bmj.286.6374.1357-a Free PMC Article
[No abstract available.]