Authors: Patrick L Ergina; Jonathan A Cook; Jane M Blazeby; Isabelle Boutron; Pierre-Alain Clavien; Barnaby C Reeves; Christoph M Seiler; Douglas G Altman; Jeffrey K Aronson; Jeffrey S Barkun; W Bruce Campbell; Jonathan A Cook; Liane S Feldman; David R Flum; Paul Glasziou; Guy J Maddern; John C Marshall; Peter McCulloch; Jon Nicholl; Steven M Strasberg; Jonathan L Meakins; Deborah Ashby; Nick Black; John Bunker; Martin Burton; Marion Campbell; Kalipso Chalkidou; Iain Chalmers; Marc de Leval; Jon Deeks; Adrian Grant; Muir Gray; Roger Greenhalgh; Milos Jenicek; Sean Kehoe; Richard Lilford; Peter Littlejohns; Yoon Loke; Rajan Madhock; Kim McPherson; Peter Rothwell; Bill Summerskill; David Taggart; Parris Tekkis; Matthew Thompson; Tom Treasure; Ulrich Trohler; Jan Vandenbroucke Journal: Lancet Date: 2009-09-26 Impact factor: 79.321