1. Professor and laboratory supervisor, respectively, Section of Toxicology, Department of Pharmacology, James H. Quillen College of Medicine, East Tennessee State University, P.O. Box 70422 Johnson City, TN 37614-0422, US.
2. Pathologist and Medical Examiner, respectively, Department of Forensic Pathology, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, US.