Medical Practice Personal View Br Med J (Clin Res Ed) 1983; 287 doi: https://doi.org/10.1136/bmj.287.6404.1544 (Published 19 November 1983) Cite this as: Br Med J (Clin Res Ed) 1983;287:1544 Article Related content Metrics Responses Peer review Related articles No related articles found.