1. Northwestern University; Chicago IL
2. ENT of Georgia; Atlanta GA
3. Madison ENT & Facial Plastic Surgery; New York NY
4. George Washington Medical Faculty Associates; Washington DC
5. Orange County Sinus Institute; Southern California Permanente Medical Group; Irvine CA
6. Department of Head and Neck Surgery; David Geffen School of Medicine; University of California Los Angeles; Los Angeles CA
7. Bethlehem ENT; Bethlehem PA
8. Mount Sinai Hospital; New York NY
9. Charlotte Eye ENT Associates; Concord NC
10. Ohio Sinus Institute; Dublin OH
11. Collin County Ear Nose & Throat; Frisco TX
12. Intersect ENT Inc.; Menlo Park CA