1 1 Orthopaedic Surgeon and Assistant Chief of Surgery for Research, Department of Orthopaedic Surgery and Sportsmedicine, Aspetar Hospital, Doha, Qatar.
2 2 Department of Orthopaedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA.
3 3 Physical and Rehabilitation Medicine (SPORTS2), University Hospital of Liège, Belgium, Liège, Belgium.