David J Leffell, MDCM, MDDavid P. Smith Professor Emeritus of DermatologyResearch InterestsCarcinoma, Basal CellCarcinoma, Squamous CellEpidermisHead and Neck NeoplasmsMelanomaSkin NeoplasmsUltraviolet RaysWound HealingMohs SurgeryGenes, p53Keratosis, ActinicView Full Profile