1. Department of Orthopaedic Surgery, School of Medicine, University of New Mexico, 2211 Lomas Blvd., Albuquerque, New Mexico 87131-5296
2. U.S. Public Health Hospital, Gallup Indian Medical Center, Gallup, New Mexico
3. School of Medicine, University of New Mexico, Albuquerque, New Mexico
4. University of New Mexico Cancer Center, Albuquerque, New Mexico
5. V.A. Medical Center, Albuquerque, New Mexico