1. Department of Orthopaedics Icahn School of Medicine at Mount Sinai New York New York
2. Department of Orthopaedic Surgery and Traumatology Inselspital, Bern University Hospital, University of Bern, Shoulder, Elbow and Orthopaedic Sports Medicine Bern Switzerland
3. Department of Orthopedic Surgery Columbia University Irving Medical Center New York New York
4. Department of Shoulder, Elbow and Orthopaedic Sports Medicine Orthopaedics Sonnenhof Bern Switzerland