Supplement
The Week
Br Med J (Clin Res Ed) 1981; 282 doi: https://doi.org/10.1136/bmj.282.6264.663 (Published 21 February 1981) Cite this as: Br Med J (Clin Res Ed) 1981;282:663
Article usage
Article metrics provide readers and authors with an indication of how often a specific article has been accessed month by month. It counts three formats - abstract/extract, full text and pdf. The page is updated each day.