Br Med J. 1974 Feb 02;1(5900):200-1. doi: 10.1136/bmj.1.5900.200-e.
British medical journal
A J Slade
PMID: 4811859 PMCID: PMC1633032 DOI: 10.1136/bmj.1.5900.200-e Free PMC Article
[No abstract available.]