Articles NEWS AND NOTES Br Med J (Clin Res Ed) 1988; 296 doi: https://doi.org/10.1136/bmj.296.6627.1007 (Published 02 April 1988) Cite this as: Br Med J (Clin Res Ed) 1988;296:1007 Article Related content Metrics Responses Peer review Related articles No related articles found.