Br Med J. 1938 Oct 01;2(4056):695-7. doi: 10.1136/bmj.2.4056.695.
British medical journal
R R Macintosh, C L Pratt
PMID: 20781773 PMCID: PMC2210325 DOI: 10.1136/bmj.2.4056.695
[No abstract available.]