Authors: Donald W Helme; Mary Kay Rayens; Sarah E Kercsmar; Sarah M Adkins; Shelby J Amundsen; Erin Lee; Carol A Riker; Ellen J Hahn Journal: Health Promot Pract Date: 2011-04-01
Authors: Geir Smedslund; Rigmor C Berg; Karianne T Hammerstrøm; Asbjørn Steiro; Kari A Leiknes; Helene M Dahl; Kjetil Karlsen Journal: Cochrane Database Syst Rev Date: 2011-05-11