Louis W. Chang is a Professor in the Departments of Pathology, Pharmacology, and Toxicology at the University of Arkansas for Medical Sciences. He also served as the Director of the Toxicology Program and is the current Graduate Director of the Pathology Program in Arkansas. Aside from being the author of over 200 scientific articles, Dr. Chang also served on the editorial boards for a number of publications and scientific journals in his field. He is a well recognized scientist internationally. Dr. Chang has been recently elected as a Fellow of the Academy of Toxicological Sciences and has become a board certified Diplomate of the American Board of Forensic Examiners and a Diplomate of the American Board of Forensic Medicine. He received his B.A. from the University of Massachusetts, Amherst, his M.S. in Anatomy and Histochemistry from the Tufts University School of Medicine, and his Ph.D. in Pathology from the University of Wisconsin, Madison Medical School. Dr. Chang also received education and training from Harvard Medical School and the University of California, Los Angeles School of Medicine.