| Affiliation: | 1. Orthopaedic Foot & Ankle Center of Washington, 2922 Telestar Court, Falls Church, VA 22042, USA;2. Department of Orthopaedic Surgery, Virginia Commonwealth University, 1101 East Marshall Street, PO Box 980565 Richmond, VA 23298-0565, USA;3. Foot and Ankle Service, Department of Orthopaedics, University of Maryland Orthopaedics and Rehabilitation Institute, University of Maryland Medical Center, University of Maryland School of Medicine, 2200 Kernan Drive, Room 1132, Baltimore, MD 21207, USA;1. Department of Orthopaedic Surgery, Washington University School of Medicine in St Louis, Campus Box 8233, 660 South Euclid Avenue, St Louis, MO 63110, USA;2. Department of Orthopaedic Surgery, Washington University School of Medicine in St Louis, 14532 South Outer Forty Drive, Suite 210, Chesterfield, MO 63017, USA;1. School of Mathematics, University of East Anglia, NR47TJ, Norwich, UK;2. Dipartimento di Matematica, Via Trieste 63, 35121 Padova, Italy |
