Br Med J. 1972 Jan 01;1(5791):51. doi: 10.1136/bmj.1.5791.51.
British medical journal
P Harris, D B Scott
PMID: 5008360 PMCID: PMC1789109 DOI: 10.1136/bmj.1.5791.51 Free PMC Article
[No abstract available.]