1. Toxicologist, Medical Examiner's Office of Maryland 111 Penn St. Baltimore, MD 21201, US.
2. Professor, Departments of Pathology and Pharmacology and Toxicology, Medical College of Virginia, Richmond, VA, US.
3. Toxicologist, Commonwealth of Virginia, Department of General Services, Division of Consolidated Laboratory Services, Bureau of Forensic Sciences, Richmond, VA, US.