1. Toxicologist and research specialist, respectively, Section of Toxicology, Department of Pharmacology, Quillen-Dishner College of Medicine, East Tennessee State University, Box 15160A Johnson City, TN 37614, US.
2. Deputy chief medical examiner of the State of Tennessee, Section of Forensic Pathology, Department of Pathology, Quillen-Dishner College of Medicine, East Tennessee State University, Johnson City, TN, US.