The LancetVolume 364, Issue 9437, 4–10 September 2004, Page 835PerspectivesCirculationAuthor links open overlay panelAndrew Wear aShow moreShareCitehttps://doi.org/10.1016/S0140-6736(04)16962-6Get rights and contentRecommended articlesReferences (0)Cited by (0)View full textCopyright © 2004 Elsevier Ltd. All rights reserved.