[1] Univ Penn, Sch Dent Med, Dept Oral Med, Philadelphia, PA 19104 USA
[2] Univ Penn, Sch Dent Med, Dept Oral & Maxillofacial Surg & Pharmacol, Philadelphia, PA 19104 USA
[3] Univ Penn, Perelman Sch Med, Dept Otorhinolaryngol Head & Neck Surg, Philadelphia, PA 19104 USA