1. Visiting scientist, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS, and assistant professor, Institute of Pharmacy, University of Berne, Berne, CH.
2. Research professor, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS, and president and laboratory director, ElSohly Laboratories, Inc., 1215½ Jackson Ave. Oxford, 38655 MS, US.