1. Rutgers Robert Wood Johnson Medical School New Brunswick New Jersey USA
2. Washington University in St Louis St Louis Missouri USA
3. Vanderbilt University Medical Center Nashville Tennessee USA
4. Tennessee Health Science Center Knoxville Tennessee USA
5. University of Kansas Medical Center Kansas City Kansas USA
6. University of Missouri School of Medicine Columbia Missouri USA
7. University of Louisville Louisville Kentucky USA
8. PRISMA Health Greenville South Carolina USA