1. Department of Surgery, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
2. Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
3. Arcademy, H.M. Queen Sophia Hospital, Stockholm, Sweden
4. Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden
5. Department of Health Promotion Science, Musculoskeletal and Sports Injury Epidemiology Center, Sophiahemmet University, Stockholm, Sweden
6. Cartilage Research Unit, Region Halland Orthopaedics, Kungsbacka Hospital, University of Gothenburg, Kungsbacka, Sweden