1. Chief, Pathology Research Unit, Aviation Toxicology Laboratory; Chief, Anthropology Research Unit, Protection and Survival Laboratory; technical assistant, Pathology Research Unit, Aviation Toxicology Laboratory; and technical assistant, Pathology Research Unit, Aviation Toxicology Laboratory, respectively; Civil Aeromedical Institute, Federal Aviation Administration Aeronautical Center, Oklahoma City, Okla., US.
2. Chairman and associate professor of maxillofacial prosthetics, Department of Removable and Maxillofacial Prosthetics, College of Dentistry, University of Oklahoma, Oklahoma City, Okla., and consultant, Office of the Chief Medical Examiner, State of Oklahoma., US.