1. Drexel University College of Medicine, Philadelphia, PA
2. Ohio University Heritage College of Osteopathic Medicine, Athens, OH
3. Department of Otolaryngology – Head & Neck Surgery, Philadelphia College of Osteopathic Medicine, Philadelphia, PA
4. Department of Otolaryngology – Head & Neck Surgery, Pennsylvania State University, Hershey, PA
5. Department of Otorhinolaryngology – Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA