Astrocytoma

• 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

• Long Beach Memorial Medical Center — Long Beach, California, United States
• Children's Hospital Los Angeles — Los Angeles, California, United States
• Jonsson Comprehensive Cancer Center, UCLA — Los Angeles, California, United States
• Children's Hospital of Orange County — Orange, California, 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

• Children's Oncology Group — Arcadia, California, United States

• Children's Oncology Group — Arcadia, California, United States

• UCSF Helen Diller Family Comprehensive Cancer Center — San Francisco, California, United States
• Children's National Medical Center — Washington D.C., District of Columbia, United States
• Children's Memorial Hospital - Chicago — Chicago, Illinois, United States
• Warren Grant Magnuson Clinical Center - NCI Clinical Trials Referral Office — Bethesda, Maryland, United States

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

Not specified