1. Graduate student, Department of Pathology, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA, US.
2. Professor, Department of Pathology and director, Toxicology Laboratory, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA, US.
3. Toxicologist, Commonwealth of Virginia, Department of General Services, Division of Consolidated Laboratories, Bureau of Forensic Science, Richmond, VA and associate professor, Department of Legal Medicine, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA, US.