1. Division of Rhinology and Sinus Surgery; Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina; Charleston SC
2. Department of Surgery; Ralph H. Johnson VA Medical Center; Charleston SC
3. Division of Rhinology and Endoscopic Sinus Surgery; Department of Otolaryngology-Head and Neck Surgery; Charlottesville VA
4. Oregon Health & Science University; Department of Otolaryngology-Head and Neck Surgery, Division of Rhinology and Sinus/Skull Base Surgery; Portland OR