Butler Stephen, Landmark Tormod, Glette Mari, Borchgrevink Petter, Woodhouse Astrid
Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway Pain Center, University Hospital, Uppsala, Sweden Department of Public Health, Family and Preventative Medicine, Uppsala University, Uppsala, Sweden National Competence Center for Complex Symptom Disorders, St. Olav's University Hospital, Trondheim, Norway Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.
Pain. 2016 Mar;157(3):541-543. doi: 10.1097/j.pain.0000000000000417.