1 Department of Orthopaedics, Walter Reed National Military Medical Center, 8901 Rockville Pike, America Building, 2nd Floor - Ortho, Bethesda, MD 20889.
2 Division of Musculoskeletal Oncology, Department of Orthopaedics, University of Miami Miller School of Medicine, 1400 NW 12th Avenue, Miami, FL 33136.
3 Orthopaedic Surgery Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10065.