[1] Univ Penn, Dept Dermatol, Perelman Sch Med, Philadelphia, PA USA
[2] Univ Penn, Sch Dent Med, Dept Oral & Maxillofacial Surg & Pharmacol, Philadelphia, PA USA
[3] Univ Penn, Dept Otorhinolaryngol Head & Neck Surg, Perelman Sch Med, Philadelphia, PA USA
[4] Univ Penn, Abramson Canc Ctr, Dept Oncol, Perelman Sch Med, Philadelphia, PA USA