1. University of Aberdeen; Aberdeen UK
2. University of Cincinnati; Cincinnati Ohio
3. Vanderbilt University; Nashville Tennessee
4. Oregon Health and Science University; Portland
5. Newton-Wellesley Hospital; Newton Massachusetts
6. McGill University; Montreal Quebec Canada
7. Universidade Federal do Paraná; Curitiba Brazil
8. University of Florida; Gainesville
9. University of Michigan; Ann Arbor
10. University of Milan; Milan Italy