1. University of Alabama at Birmingham
2. Veterans Affairs Ann Arbor Healthcare System and University of Michigan Medical School, Ann Arbor
3. University of Wisconsin, Madison
4. University of Pittsburgh, Pennsylvania
5. Johns Hopkins University School of Medicine, Baltimore, Maryland
6. University of Texas Health Science Center, Houston
7. Cooper Medical School of Rowan University, Camden, New Jersey
8. University of Pennsylvania, Philadelphia
9. Georgia Regents University, Augusta
10. Weill Cornell Medical Center and Cornell University, New York, New York
11. Children's Hospital of Pennsylvania, Philadelphia
12. Harper University Hospital and Wayne State University, Detroit, Michigan