1. University of AlbertaEdmonton AB Canada
2. University of PennsylvaniaPhiladelphia PA
3. Baylor University Medical CenterDallas TX
4. Yale UniversityNew Haven CT
5. University of TorontoToronto ON Canada
6. University of ColoradoDenver CO
7. University of RochesterRochester NY
8. University of TexasHouston TX
9. Emory UniversityAtlanta GA
10. Mercy Medical CenterBaltimore MD
11. Mayo ClinicRochester MN
12. Virginia Commonwealth University and McGuire VA Medical CenterRichmond VA