SupportPrim—a computerized clinical decision support system for stratified care for patients with musculoskeletal pain complaints in general practice: study protocol for a randomiz... oleh Lars Christian Naterstad Lervik, Ottar Vasseljen, Bjarne Austad, Kerstin Bach, Anita Formo Bones, Fredrik Granviken, Jonathan C. Hill, Pål Jørgensen, Torbjørn Øien, Paola Marin Veites, Danielle A. Van der Windt, Ingebrigt Meisingset