Oligodendroglioma

• University of Arkansas for Medical Sciences — Little Rock, Arkansas, United States
• University of California San Diego Cancer Center — La Jolla, California, United States
• Children's Hospital Los Angeles — Los Angeles, California, United States
• Jonsson Comprehensive Cancer Center, UCLA — Los Angeles, California, United States

• University of Alabama at Birmingham Comprehensive Cancer Center — Birmingham, Alabama, United States
• University of South Alabama Medical Center — Mobile, Alabama, United States
• Phoenix Children's Hospital — Phoenix, Arizona, United States
• Arizona Cancer Center — Tucson, Arizona, United States

• Herbert Irving Comprehensive Cancer Center at Columbia University Medical Center — New York, United States

• St. Joseph's Hospital and Medical Center — Paterson, New Jersey, United States
• Herbert Irving Comprehensive Cancer Center at Columbia University Medical Center — New York, United States

• Cancer and Leukemia Group B — Chicago, Illinois, United States

• Jonsson Comprehensive Cancer Center, UCLA — Los Angeles, California, United States

Not specified

• Hopital Universitaire Erasme — Brussels, Belgium
• Academisch Ziekenhuis der Vrije Universiteit Brussel — Brussels, Belgium
• U.Z. Gasthuisberg — Leuven, Belgium
• Centre Hospitalier Regional de Lille — Lille, France

• Kaiser Franz Josef Hospital — Vienna, Austria
• U.Z. Gasthuisberg — Leuven, Belgium
• Centre de Lutte Contre le Cancer, Georges-Francois Leclerc — Dijon, France
• CRLCC Nantes - Atlantique — Nantes-Saint Herblain, France

• Kaiser Franz Josef Hospital — Vienna (Wien), Austria
• Hopital Universitaire Erasme — Brussels, Belgium
• Academisch Ziekenhuis der Vrije Universiteit Brussel — Brussels (Bruxelles), Belgium
• Hopital de Jolimont — Haine-Saint-Paul, Belgium