David J Leffell, MDCMDavid P. Smith Professor Emeritus of Dermatology; Section Chief, Dermatologic Surgery and Cutaneous OncologyResearch InterestsCarcinoma, Basal CellCarcinoma, Squamous CellEpidermisHead and Neck NeoplasmsMelanomaSkin NeoplasmsUltraviolet RaysWound HealingMohs SurgeryGenes, p53Keratosis, ActinicView Full Profile