Authors: Gordon H Guyatt; Andrew D Oxman; Shahnaz Sultan; Paul Glasziou; Elie A Akl; Pablo Alonso-Coello; David Atkins; Regina Kunz; Jan Brozek; Victor Montori; Roman Jaeschke; David Rind; Philipp Dahm; Joerg Meerpohl; Gunn Vist; Elise Berliner; Susan Norris; Yngve Falck-Ytter; M Hassan Murad; Holger J Schünemann Journal: J Clin Epidemiol Date: 2011-07-30 Impact factor: 6.437