1. University of Utah, Salt Lake City, USA
2. University of Wisconsin–Milwaukee, USA
3. Emory University School of Medicine, Atlanta, GA, USA
4. Yale University School of Medicine, New Haven, CT, USA
5. Massachusetts General Hospital and Harvard Medical School, Boston, USA
6. The University of Texas Health Science Center at San Antonio, USA
7. Johns Hopkins Medical Institutions, Baltimore, MD, USA
8. Weill Cornell Medical College, New York, NY, USA
9. University of California, Los Angeles, USA