1. Diacor Hospital; Orthopaedic Department; Alppikatu 2 Helsinki Finland FIN-00530
2. ORTON Orthopaedic Hospital; Knee and Sports Medicine Department; Tenholantie 10 Helsinki Finland 00280
3. National Institute for Health and Welfare (THL); Centre for Health and Social Economics (CHESS); PO Box 30 Mannerheimintie 166 Helsinki Finland FI-00271
4. ORTON Orthopaedic Hospital; Department of Orthopaedics; Tenholantie 10 Helsinki Finland 00280