The LancetVolume 299, Issue 7748, 26 February 1972, Page 476Reviews of BooksAuthor links open overlay panelShow moreShareCitehttps://doi.org/10.1016/S0140-6736(72)90126-2Get rights and contentRecommended articlesReferences (0)Cited by (0)View full textCopyright © 1972 Published by Elsevier Ltd.