1. The Permanente Medical Group Walnut Creek California USA
2. University of Kentucky Medical Center Lexington Kentucky USA
3. University of Illinois at Chicago Chicago Illinois USA
4. Virginia Mason Medical Center Seattle Washington USA
5. Cleveland Clinic Cleveland Ohio USA
6. The Ohio State University Columbus Ohio USA
7. Mississippi Public Health Association Jackson Mississippi USA
8. UT Southwestern Medical Center Dallas Texas USA
9. University of Michigan Medical School Ann Arbor Michigan USA
10. Columbia University Medical Center New York USA
11. AARP Washington District of Columbia USA
12. VCU School of Medicine Richmond Virginia USA
13. Johns Hopkins University School of Medicine Baltimore Maryland USA
14. University of Pittsburgh Pittsburgh Pennsylvania USA
15. Stanford University Palo Alto California USA
16. Northwestern Medicine Chicago Illinois USA
17. American Academy of Otolaryngology–Head and Neck Surgery Foundation Alexandria Virginia USA