By Thomas E. Rohrer, MD, SkinCare Physicians of Chestnut Hill; Jonathan L. Cook, MD, Duke University Medical Center; and Tri H. Nguyen, MD, Associate Professor, Dermatology and Otolaryngology; Director, Mohs and Dermatologic Surgery, University of Texas, Houston, TX; Ramsey Mellette JR, Director of Mohs Surgery, University of Colorado Health Center |