1. Cleveland, Ohio, Houston, Texas
2. Section of Nasal and Sinus Disorders, Head and Neck Institute, Cleveland Clinic Foundation
3. Rhinology and Sinonasal Surgery, Department of Otolaryngology–Head and Neck Surgery, University of Texas at Houston Health Science Center
4. St Petersburg, Florida
5. Sinus & Nasal Institute of Florida, St. Anthony's Carillon Outpatient Center