1. University of Alabama at Birmingham (UAB), Birmingham, Alabama, USA.
2. TED University, Ankara, Turkey.
3. Emory University School of Medicine, Atlanta, Georgia, USA.
4. University of Mississippi Medical Center (UMMC), Jackson, Mississippi, USA.
5. Stroger Hospital of Cook County, Chicago, Illinois, USA.
6. Columbia University, New York, New York, USA.
7. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
8. Downstate Health Sciences University, Brooklyn, New York, USA.
9. University of California, San Francisco, San Francisco, California, USA.
10. Montefiore Medical Center, New York, New York, USA.
11. Johns Hopkins University, Baltimore, Maryland, USA.
12. Georgetown University, Washington, District of Columbia, USA.
13. Koc University, Istanbul, Turkey.