Authors: Anita Gross; Theresa M Kay; Jean-Philippe Paquin; Samuel Blanchette; Patrick Lalonde; Trevor Christie; Genevieve Dupont; Nadine Graham; Stephen J Burnie; Geoff Gelley; Charles H Goldsmith; Mario Forget; Jan L Hoving; Gert Brønfort; Pasqualina L Santaguida Journal: Cochrane Database Syst Rev Date: 2015-01-28