The LancetVolume 297, Issue 7701, 3 April 1971, Pages 685-686Reviews of BooksAuthor links open overlay panelShow moreShareCitehttps://doi.org/10.1016/S0140-6736(71)92686-9Get rights and contentRecommended articlesReferences (0)Cited by (0)View full textCopyright © 1971 Published by Elsevier Ltd.