ames, MD Paul R Gross Professor of Dermatology, Vice-Chairman, Residency Program Director, Department of Dermatology, University of Pennsylvania School of MedicineWilliam D James, MD is a member of the following medical societies: American Academy of Dermatology and Society for Investigative DermatologyDisclosure: Elsevier Royalty Other Paul Krusinski, MD Director of Dermatology, Fletcher Allen He