Astrocytoma

• Erasmus MC — Rotterdam, South Holland, Netherlands
• Amsterdam UMC — Amsterdam, Netherlands
• HollandPTC — Delft, Netherlands
• Leiden University Medical Center — Leiden, Netherlands

• Hualien Tzu Chi Hospital — Hualien City, Taiwan
• Taichung Veterans General Hospital — Taichung, Taiwan
• Tri-Service General Hospital — Taipei, Taiwan

• University Children's Hospital — Würzburg, Bavaria, Germany

• University of Los Angeles, California — Los Angeles, California, United States

Not specified

• Arizona Oncology Services Foundation — Phoenix, Arizona, United States
• USC/Norris Comprehensive Cancer Center and Hospital — Los Angeles, California, United States
• CCOP - Christiana Care Health Services — Newark, Delaware, United States
• University of Florida Shands Cancer Center — Gainesville, Florida, United States

• Cohen Children's Medical Center of New York — New Hyde Park, New York, United States

• St. Jude Children's Research Hospital — Memphis, Tennessee, United States

• Duke University Medical Center — Durham, North Carolina, United States

• Memorial Sloan Kettering Cancer Center — New York, United States