1. Perelman School of MedicineUniversity of Pennsylvania Philadelphia Pennsylvania USA
2. Department of Biostatistics, Epidemiology and InformaticsUniversity of Pennsylvania Philadelphia Pennsylvania USA
3. Long School of MedicineUniversity of Texas Health San Antonio San Antonio Texas USA
4. Department of Otorhinolaryngology—Head and Neck SurgeryUniversity of Pennsylvania Philadelphia Pennsylvania USA
5. Department of OtolaryngologyUniversity of Kansas School of Medicine Kansas City Kansas USA
6. Department of OtolaryngologyGeorge Washington University Washington District of Columbia USA
7. Department of OtolaryngologyMedical University of South Carolina Charleston South Carolina USA
8. Department of OtolaryngologyUniversity of San Francisco San Francisco California USA
9. Department of OtolaryngologyMt. Sinai Health System New York New York USA
10. Department of OtolaryngologyScripps Health/Senta Clinic San Diego California USA
11. Department of OtolaryngologyCleveland Clinic Cleveland Ohio USA
12. Department of OtolaryngologyUniversity of Miami Miami Florida USA
13. Department of OtolaryngologyMayo Clinic Rochester Minnesota USA