Br Med J. 1942 Jun 27;1(4251):787-9. doi: 10.1136/bmj.1.4251.787.
British medical journal
W Oakley, J P Donnell
PMID: 20784302 PMCID: PMC2162314 DOI: 10.1136/bmj.1.4251.787
[No abstract available.]