Br Med J. 1965 Oct 30;2(5469):1048-50. doi: 10.1136/bmj.2.5469.1048.
British medical journal
M Hamilton
PMID: 5826294 PMCID: PMC1847145 DOI: 10.1136/bmj.2.5469.1048 Free PMC Article
[No abstract available.]