1. Medical Student, Department of Biochemistry and Biophysics, University of Pennsylvania School of Medicine.
2. Research Assistant Professor of Neurology, Department of Biochemistry and Biophysics, University of Pennsylvania School of Medicine.
3. Professor of Anesthesiology and Chairman, Department of Anesthesiology, Hahnemann University
4. Researh Technician, Department of Biochemistry/Biophysics, University of Pennsylvania School of Medicine.
5. Professor Emeritus, Department of Biochemistry and Biophysics, University of Pennsylvania School of Medicine.