Letters, Notes, and AnswersBr Med J 1936; 2 doi: https://doi.org/10.1136/bmj.2.3949.571 (Published 12 September 1936) Cite this as: Br Med J 1936;2:571
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