1. University of Illinois at Chicago Chicago Illinois USA
2. University of Washington Seattle Washington USA
3. Temple University School of Medicine Philadelphia PA USA
4. Cleveland Clinic Cleveland Ohio USA
5. Tulane School of Medicine New Orleans Louisiana USA
6. University of Pennsylvania Pennsylvania USA
7. Rhode Island Hospital and Alpert Medical School of Brown University Providence Rhode Island USA
8. Austral University Hospital Buenos Aires Argentina
9. Peking Union Medical College Hospital Beijing P.R. China
10. Stanley Dudrick Memorial Hospital Skawina Poland
11. Ipanema Research Trust Auckland New Zealand
12. Moffitt Cancer Center Tampa Florida USA
13. Oley Foundation, Delmar New York USA
14. Indiana University School of Medicine Indianapolis Indiana USA