Neoplasms, Connective Tissue

• Children's Hospital of Alabama — Birmingham, Alabama, United States
• Phoenix Childrens Hospital — Phoenix, Arizona, United States
• Southern California Permanente Medical Group — Downey, California, United States
• Loma Linda University Medical Center — Loma Linda, California, United States

• Musculoskeletal Tumor Center of Peking University People's Hospital — Beijing, China
• Peking University Shougang Hospital — Beijing, China

• Children's Hospital of Alabama — Birmingham, Alabama, United States
• University of Alabama at Birmingham Cancer Center — Birmingham, Alabama, United States
• University of Arkansas for Medical Sciences — Little Rock, Arkansas, United States
• Southern California Permanente Medical Group — Downey, California, United States

• Scottsdale Healthcare Research Institute — Scottsdale, Arizona, United States
• Mayo Clinic - Arizona — Scottsdale, Arizona, United States
• University of Arizona Cancer Center — Tucson, Arizona, United States
• University of Iowa — Iowa City, Iowa, United States

• Hospital Universitario de Cruces — Barakaldo, Spain
• Hospital del Mar — Barcelona, Spain
• Hospital Quirón Teknon — Barcelona, Spain
• Hospital Santa Creu i Sant Pau — Barcelona, Spain

Not specified

• Chang Gung Memorial Hospital Linkou Branch — Taoyuan, Taiwan

• Mayo Clinic — Rochester, Minnesota, United States

• Hong Kong Sanatorium & Hospital — Hong Kong

• Children's Healthcare of Atlanta/Emory University — Atlanta, Georgia, United States