Br Med J (Clin Res Ed). 1981 Jul 04;283(6283):40-3. doi: 10.1136/bmj.283.6283.40.
British medical journal (Clinical research ed.)
S M Gore
PMID: 6788259 PMCID: PMC1505973 DOI: 10.1136/bmj.283.6283.40
[No abstract available.]