Authors: E Cobo; J Cortés; J M Ribera; F Cardellach; A Selva-O'Callaghan; B Kostov; L García; L Cirugeda; D G Altman; J A González; J A Sànchez; F Miras; A Urrutia; V Fonollosa; C Rey-Joly; M Vilardell Journal: BMJ Date: 2011-11-22
Authors: Sally Hopewell; Gary S Collins; Isabelle Boutron; Ly-Mee Yu; Jonathan Cook; Milensu Shanyinde; Rose Wharton; Larissa Shamseer; Douglas G Altman Journal: BMJ Date: 2014-07-01