1. University of Louisville, Louisville, Kentucly
2. University of Texas–Houston, Houston
3. Oregon Health and Science University, Portland
4. Kingston General Hospital, Queens University, Kingston, Ontario, Canada
5. San Raffaele University, Milan, Italy
6. McGill University Health Centre, Montreal, Quebec, Canada
7. University of Washington, Seattle
8. Royal Alexandra Hospital, University of Alberta, Edmonton, Alberta, Canada
9. The University of Texas Medical Branch, Galveston
10. UCLA School of Medicine, Los Angeles, California
11. University of Wisconsin–Madison, Madison
12. University of Tennessee, Knoxville
13. Barnes-Jewish Hospital, Washington University School of Medicine, St Louis, Missouri
14. University of Colorado, Aurora