Department of Geriatrics, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.Psychiatric Research Centre, Örebro University, Örebro, Sweden.Department of Psychiatry, Ryhov Hospital, Jönköping, Sweden.Department of Surgery, Ryhov Hospital, Jönköping, Sweden.Department of Surgery, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.