1. Graduate student, Department of Pathology, Medical College of Virginia, Virginia Commonwealth University, Richmond, Va. 23298, US.
2. Deputy chief medical examiner, Commonwealth of Virginia, Office of the Chief Medical Examiner, 9 North 14th St., Richmond, Va. 23219, and the Department of Legal Medicine, Medical College of Virginia, Virginia Commonwealth University, Richmond, Va. 23298, US.
3. Analytical chemist and toxicologist, respectively, Commonwealth of Virginia, Division of Consolidated Laboratories, Bureau of Forensic Science, 1 North 14th St., Richmond, Va. 23219, US.