Articles SUPPLEMENT 2748 Br Med J 1957; 2 doi: https://doi.org/10.1136/bmj.2.5046.S113 (Published 21 September 1957) Cite this as: Br Med J 1957;2:S113 Article Related content Metrics Responses Peer review Related articles Correction Correction Published: 08 December 1945; Br Med J 2 doi:10.1136/bmj.2.4431.S128