The LancetVolume 222, Issue 5744, 30 September 1933, Pages 761-762MEDICAL OR NON-MEDICAL FACTAuthor links open overlay panelShow moreShareCitehttps://doi.org/10.1016/S0140-6736(01)18423-0Get rights and contentRecommended articlesReferences (0)Cited by (0)View full textCopyright © 1933 Published by Elsevier Ltd.