Letters
Authors' reply
BMJ 1996; 312 doi: https://doi.org/10.1136/bmj.312.7030.579b (Published 02 March 1996) Cite this as: BMJ 1996;312:579
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.