1 Department of Clinical Sciences Lund, Orthopedics, Clinical Epidemiology Unit, Lund University, Lund, Sweden; Department of Movement Sciences and Health, University of West Florida, FL, USA. Electronic address: armaghan.mahmoudian@gmail.com.
2 Department of Medicine, University of Toronto, Toronto, ON, Canada.
3 Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA.
4 Department of General Practice, Erasmus MC University Medical Center Rotterdam, the Netherlands.
5 Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada; Department of Medicine, University of Western Ontario, London, ON, Canada; Western Bone and Joint Institute, London, ON, Canada.
6 Department of Clinical Sciences Lund, Orthopedics, Clinical Epidemiology Unit, Lund University, Lund, Sweden.
7 Center for Treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway.
8 Department of Clinical Sciences Lund, Orthopedics, Lund University, Lund, Sweden.