Correction
Corrections
Br Med J 1969; 3 doi: https://doi.org/10.1136/bmj.3.5668.482-a (Published 23 August 1969) Cite this as: Br Med J 1969;3:482
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.