1. Assistant Professor, Department of Orthopaedic Surgery, University of Rochester Medical Center, Box 665, 601 Elmwood Ave., Rochester, NY 14642.
2. San Pablo Orthopedic Foot and Ankle Clinic, Bayamon, Puerto Rico.
3. Clinical Professor of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, and Alabama Sports Medicine and Orthopaedic Center, Birmingham, Alabama.
4. Associate Professor, Department of Orthopaedic Surgery, Washington University School of Medicine, St. Louis, Missouri.