Articles ANNOTATIONS Br Med J 1946; 2 doi: https://doi.org/10.1136/bmj.2.4461.18 (Published 06 July 1946) Cite this as: Br Med J 1946;2:18 Article Related content Metrics Responses Peer review Related articles Correction Correction Published: 06 August 1955; Br Med J 2 doi:10.1136/bmj.2.4935.394