1. Ludwig-Maximilians-Universität München, Klinikum Grosshadern, Munich, Germany
2. Weill Medical College of Cornell University, New York, New York
3. University of Texas Southwestern Medical Center, Dallas, Texas
4. University of Montréal, Montréal, Quebec, Canada
5. McGill University Health Centre, Montréal, Quebec, Canada
6. University of Padua, Padua, Italy
7. University of Regensburg, Caritas St. Josef Medical Center, Regensburg, Germany
8. University of Western Ontario, London, Ontario, Canada
9. Baylor College of Medicine, Houston, Texas
10. Johns Hopkins University, Baltimore, Maryland
11. University of Southern California, Los Angeles, California