| Institution: | 1. University of Pittsburgh Medical Center, South Side Hospital, Pittsburgh, PA, USA;2. Foot and Ankle Division, Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, South Side Hospital, 2100 Jane Street, Roesch-Taylor Med Bldg North 7100, Pittsburgh, PA 15203, USA;2. Department of Orthopaedic Surgery, Pontificia Universidad Cat?lica de Chile, Santiago, Chile;3. The Steadman Clinic, Vail, CO;1. Department of Orthopaedics, University Hospital South Manchester, Southmoor Road, Manchester, M23 9LT, UK;2. Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK |
