1. Harvard Medical SchoolBoston, Massachusetts
2. Brigham and Women’s HospitalBoston, Massachusetts
3. Medical College of South CarolinaCharleston, South Carolina
4. Boston UniversityBoston, Massachusetts
5. Kaiser Permanente Medical CenterSan Diego, California
6. Washington UniversitySt. Louis, Missouri
7. University of Rochester Medical CenterRochester, New Yorkand
8. Partners Health CareBoston, Massachusetts