Br Med J (Clin Res Ed). 1982 Sep 18;285(6344):808. doi: 10.1136/bmj.285.6344.808-b.
British medical journal (Clinical research ed.)
J Sommers, D B Jeffrey
PMID: 6811010 PMCID: PMC1499561 DOI: 10.1136/bmj.285.6344.808-b
[No abstract available.]