*Indiana University School of Medicine, 1100 West Michigan Street, Indianapolis, Indiana 46202.
**Director of Orthopaedic Surgery, Wishard Memorial Hospital, and Associate Professor of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, Indiana 46202.
†Department of Medical Research, Methodist Hospital of Indiana, Inc., 1604 N. Capitol Avenue, Indianapolis, Indiana 46206.
Reprint requests to K. Donald Shelbourne, M.D.
Received: September 22, 1980.