1. Stanford University Palo Alto California
2. Johns Hopkins University Baltimore Maryland
3. Harvard University Boston Massachusetts
4. Massachusetts General Hospital Boston Massachusetts
5. University of Michigan Ann Arbor Michigan
6. Texas Tech University El Paso Texas
7. Wake Forest University Winston‐Salem North Carolina
8. California Pacific Medical Center San Francisco California
9. Mayo Clinic Rochester Minnesota
10. Temple University Philadelphia Pennsylvania
11. National Institute of Diabetes and Digestive and Kidney Diseases Bethesda Maryland
12. University of Louisville Louisville Kentucky