1. Associate director, assistant toxicologist, associate toxicologist, and post-doctoral fellow, respectively, Center for Human Toxicology, University of Utah, Salt Lake City, UT, US.
2. Research assistant professor and adjunct professor, respectively, Department of Biochemical Pharmacology and Toxicology, University of Utah, Salt Lake City, UT, US.
3. Chemical Toxicology Institute, 1167 Chess Dr., Suite E, P.O. Box 8209, Foster City, CA 94404, US.