1. Brigham and Women's Hospital; Harvard Medical School; Boston Massachusetts
2. Cleveland Clinic; Cleveland Ohio
3. State University of New York; Downstate College of Medicine; Brooklyn New York
4. Baylor College of Medicine; Veterans Affairs Medical Center; Houston Texas
5. Royal Brompton & Harefield Hospitals; London UK
6. Western Sydney University; Campbelltown New South Wales Australia
7. Pfizer; New York New York