1. Department of Surgery; Division of Otolaryngology-Head and Neck Surgery; University of California San Diego; San Diego CA
2. Department of Otolaryngology-Head and Neck Surgery; Division of Rhinology; Oregon Health and Science University; Portland OR
3. Division of Head and Neck Surgery; Rhinology-Sinus and Skull Base Surgery Program; Department of Surgery; University of Utah; Salt Lake City UT
4. Department of Otolaryngology-Head and Neck Surgery; Division of Rhinology and Sinus Surgery; Medical University of South Carolina; Charleston SC