The LancetVolume 303, Issue 7845, 5 January 1974, Pages 25-26Letters to the EditorMEDICINE AND PUBLIC HEALTH IN THE TROPICSAuthor links open overlay panelCamilo VijilShow moreShareCitehttps://doi.org/10.1016/S0140-6736(74)93014-1Get rights and contentRecommended articlesReferences (2)H. Lehmann et al.Lancet(1972)Lancet(1973)Cited by (0)View full textCopyright © 1974 Published by Elsevier Ltd.