1. UCSF School of Medicine; San Francisco; California
2. Hôpital André Mignot and Université Versailles Saint-Quentin-en-Yvelines; Versailles France
3. Wayne State University School of Medicine; Detroit Michigan
4. Saint Louis Hospital; Paris France
5. University of Texas M.D. Anderson Cancer Center; Houston Texas
6. Hospital Italiano De La Plata; La Plata Argentina
7. Bristol-Myers Squibb; Princeton New Jersey
8. Universitätsklinikum Jena; Jena Germany
9. University of Turin; Turin Italy