Correspondence
Approved Names
Br Med J 1975; 2 doi: https://doi.org/10.1136/bmj.2.5967.393-a (Published 17 May 1975) Cite this as: Br Med J 1975;2:393
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.