Br Med J. 1961 Jun 24;1(5242):1796-9. doi: 10.1136/bmj.1.5242.1796.
British medical journal
A Bloom, J G Richards
PMID: 20789170 PMCID: PMC1954420 DOI: 10.1136/bmj.1.5242.1796
[No abstract available.]