1. Division of Rhinology and Sinus Surgery Department of Otolaryngology – Head and Neck Surgery University of Virginia Charlottesville Virginia USA
2. University of Virginia School of Medicine Charlottesville Virginia USA
3. Division of Rhinology and Sinus Surgery Department of Otolaryngology – Head and Neck Surgery Medical University of South Carolina Charleston South Carolina USA
4. Department of Surgery Ralph H. Johnson VA Medical Center Charleston South Carolina USA