1. University of Padua, Padua, Italy
2. University of Texas M.D. Anderson Cancer Center, Houston, Texas
3. University of Montréal, Montréal, Québec, Canada
4. University of Southern California, Los Angeles, California
5. Laval University, Québec City, Québec, Canada
6. University of Texas Southwestern Medical Center, Dallas, Texas
7. Ludwig-Maximilians-Universität München, Klinikum Grosshadern, Munich, Germany
8. Universität Bonn, Bonn, Germany
9. McGill University Health Centre, Montréal, Québec, Canada
10. University of Regensburg, Regensburg, Germany
11. University of Western Ontario, London, Ontario, Canada
12. Baylor College of Medicine, Houston, Texas
13. Johns Hopkins University, Baltimore, Maryland
14. University of Ulm, Ulm, Germany