Br Med J. 1974 Jun 29;2(5921):728. doi: 10.1136/bmj.2.5921.728-c.
British medical journal
K B Thomas
PMID: 4852945 PMCID: PMC1611136 DOI: 10.1136/bmj.2.5921.728-c Free PMC Article
[No abstract available.]