1. L.J. Tuttle, PT, PhD, Department of Orthopaedic Surgery, University of California, San Diego, Mail Code 0863, 3525 John Hopkins Ct, Room 135, San Diego, CA 92121 (USA).
2. M.K. Hastings, PT, DPT, ATC, Program in Physical Therapy and Department of Orthopaedic Surgery, Washington University School of Medicine, St Louis, Missouri.
3. M.J. Mueller, PT, PhD, FAPTA, Program in Physical Therapy and Department of Radiology, Washington University School of Medicine.