1. Associate professor of radiology, Washington University School of Medicine, and co-director, Musculoskeletal Section, The Mallinckrodt Institute of Radiology, St. Louis, Mo. 63110, US.
2. Professor of forensic and environmental pathology and chairman, Division of Forensic and Environmental Pathology, St. Louis University School of Medicine, and chief medical examiner, City and County of St. Louis, Mo., US.