Br Med J (Clin Res Ed). 1982 Dec 11;285(6356):1681-2. doi: 10.1136/bmj.285.6356.1681.
British medical journal (Clinical research ed.)
G Macpherson
PMID: 6816330 PMCID: PMC1500692 DOI: 10.1136/bmj.285.6356.1681
[No abstract available.]