Middle Articles Conferences and Meetings Br Med J 1966; 2 doi: https://doi.org/10.1136/bmj.2.5520.1002 (Published 22 October 1966) Cite this as: Br Med J 1966;2:1002 Article Related content Metrics Responses Peer review Related articles Correction Correction Published: 05 November 1966; Br Med J 2 doi:10.1136/bmj.2.5522.1125-a