Correction
Correction
Br Med J 1949; 1 doi: https://doi.org/10.1136/bmj.1.4591.42-a (Published 01 January 1949) Cite this as: Br Med J 1949;1:42
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.