1. Division of Rhinology and Sinus Surgery Department of Otolaryngology – Head and Neck Surgery Medical University of South Carolina Charleston South Carolina USA
2. Brown University Providence Rhode Island USA
3. Department of Surgery Ralph H. Johnson VA Medical Center Charleston South Carolina USA
4. Department of Otolaryngology Harvard Medical School Boston Massachusetts USA
5. Department of Otolaryngology – Head and Neck Surgery Massachusetts Eye & Ear Infirmary Boston Massachusetts USA