1 Clinic for Orthopaedics and Trauma Surgery, Malteser St. Mary's Hospital, Erlangen, Germany.
2 Department of Orthopaedics, University of Rostock, Rostock, Germany.
3 Tagesklinik Esplanade, Berlin, Germany.
4 Chairman Medical Committee FIS, Member Competition Equipment Committee FIS, Rottach-Egern, Germany.
5 Norwegian School of Sport Sciences, Oslo Sports Trauma Research Center, Oslo, Norway.
6 Orthopaedic Department, Akershus University Hospital, Lørenskog, Norway.
7 Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
8 Luxembourg Institute of Research in Orthopedics, Sports Medicine and Science (LIROMS), Luxembourg, Luxembourg.
9 Dept. GERO, Faculty of Medicine, Vrije Universiteit Brussel, Brussels, Belgium.
10 Department of Orthopaedic Surgery, Division of Neurosciences and Musculoskeletal Diseases, Centre Hospitalier de Luxembourg (CHL), Luxembourg, Luxembourg.