Medical Practice Personal View Br Med J (Clin Res Ed) 1984; 289 doi: https://doi.org/10.1136/bmj.289.6454.1305 (Published 10 November 1984) Cite this as: Br Med J (Clin Res Ed) 1984;289:1305 Article Related content Metrics Responses Peer review Related articles No related articles found.