Errata
Erratum
Br Med J 1904; 1 doi: https://doi.org/10.1136/bmj.1.2254.648 (Published 12 March 1904) Cite this as: Br Med J 1904;1:648
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.