title: Reply.
authors.affiliation: 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.
authors.forename: Stephen
authors.initials: S
authors.lastname: Butler
authors.affiliation: National Competence Center for Complex Symptom Disorders, St. Olav's University Hospital, Trondheim, Norway.
authors.forename: Tormod
authors.initials: T
authors.lastname: Landmark
authors.affiliation: Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.
authors.forename: Mari
authors.initials: M
authors.lastname: Glette
authors.affiliation: Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.|National Competence Center for Complex Symptom Disorders, St. Olav's University Hospital, Trondheim, Norway.
authors.forename: Petter
authors.initials: P
authors.lastname: Borchgrevink
authors.affiliation: 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.
authors.forename: Astrid
authors.initials: A
authors.lastname: Woodhouse