British Medical JournalBr Med J 1863; 2 doi: https://doi.org/10.1136/bmj.2.134.89 (Published 25 July 1863) Cite this as: Br Med J 1863;2:89
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