Br Med J. 1971 Apr 03;2(5752):48. doi: 10.1136/bmj.2.5752.48-b.
British medical journal
D H Wilson
PMID: 5573193 PMCID: PMC1795925 DOI: 10.1136/bmj.2.5752.48-b Free PMC Article
[No abstract available.]