British Medical JournalBr Med J 1904; 1 doi: http://dx.doi.org/10.1136/bmj.1.2254.619 (Published 12 March 1904) Cite this as: Br Med J 1904;1:619
Log in using your username and password
Log in through your institution
Register for a free trial to thebmj.com to receive unlimited access to all content on thebmj.com for 14 days.
Sign up for a free trial