1. Department of Orthopaedic Surgery & Sports Medicine, University of South Carolina School of Medicine, Columbia, South Carolina, USA
2. Calderdale and Huddersfield NHS Foundation Trust, Huddersfield Royal Infirmary, Huddersfield, UK
3. Orthopaedic Department, University Hospital Basel and University of Basel, Basel, Switzerland
4. Alps Surgery Institute, Clinique Générale, Annecy, France