1. Assistant Professor, Department of Orthopaedics, University of California, Davis, School of Medicine.
2. Associate Clinical Professor of Orthopaedic Surgery, University of California School of Medicine, San Francisco, California; Director Gait Analysis Laboratory, Shriner's Hospital for Crippled Children, San Francisco, California., Gait Analysis Laboratory, Shriner's Hospital for Crippled Children, San Francisco, California.
3. Gait Analysis Laboratory, Shriner's Hospital for Crippled Children, San Francisco, California.
4. Associate Clinical Professor of Surgery, University of California, School of Medicine, Ralph K. Davies Medical Center, San Francisco, California. Address for reprint requests: Shriner's Hospital Gait Analysis Laboratory, 1701 19th Ave., San Francisco, California, 94122.
5. Associate Clinical Professor of Orthopaedic Surgery, University of California School of Medicine, San Francisco, California; Director Gait Analysis Laboratory, Shriner's Hospital for Crippled Children, San Francisco, California.