1. Department of Otolaryngology-Head and Neck Surgery, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, USA
2. Department of Otolaryngology−Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, USA
3. Philadelphia College of Osteopathic Medicine, Philadelphia, PA, USA
4. Department of Otolaryngology-Head and Neck Surgery, Lankenau Medical Center, Wynnewood, PA, USA
5. Department of Pathology, Lankenau Medical Center, Wynnewood, PA, USA
6. Lankenau Institute for Medical Research, Wynnewood, PA, USA