1. Department of Dermatology University of Pennsylvania Philadelphia PA U.S.A.
2. Corporal Michael J. Crescenz VAMC Philadelphia PA U.S.A.
3. Sidney Kimmel Medical College Thomas Jefferson University Philadelphia PA U.S.A.
4. Rutgers Robert Wood Johnson Medical School New Brunswick NJ U.S.A.
5. Perelman School of Medicine University of Pennsylvania Philadelphia PA U.S.A.