Neoplasms, Connective Tissue

• University of Alabama at Birmingham Comprehensive Cancer Center — Birmingham, Alabama, United States
• Banner Thunderbird Medical Center — Glendale, Arizona, United States
• Banner Good Samaritan Medical Center — Phoenix, Arizona, United States
• CCOP - Western Regional, Arizona — Phoenix, Arizona, United States

• Universitè Lyon 1 Claude Bernard — Lyon, France
• Pediatric Hematology and Oncology, University Hospital Münster — Münster, Germany
• Istituti Ortopedici Rizzoli — Bologna, Italy
• Department of Clinical Oncology, Leiden University Medical Center — Leiden, Postzone K1-P, Netherlands

• CHU Besançon- Hôpital Jean Minjoz — Besançon, France
• Chu - Hopital Des Enfants Bordeaux — Bordeaux, France
• CHU Dijon Le Bocage, Hôpital d'Enfants — Dijon, France
• Chu Grenoble — Grenoble, France

• Universitaetsklinikum Freiburg — Freiburg im Breisgau, Germany
• Kantonsspital Aarau — Aarau, Switzerland
• Kantonsspital Baden — Baden, Switzerland
• Universitaetsspital-Basel — Basel, Switzerland

• Sarcoma Oncology Center — Santa Monica, California, United States
• Children's National Medical Center — Washington D.C., District of Columbia, United States
• University of Iowa — Iowa City, Iowa, United States
• National Cancer Institute — Bethesda, Maryland, United States

• Fundació de Gestió Sanitària de l'Hospital de la Santa Creu i Sant Pau — Barcelona, Spain

• Peking University People's Hospital — Beijing, Beijing Municipality, China
• Peking University Shougang Hospital — Beijing, Beijing Municipality, China

Not specified

• Mayo Clinic Arizona /ID# 148582 — Phoenix, Arizona, United States
• Scottsdale Healthcare /ID# 151349 — Scottsdale, Arizona, United States
• University of California, Los Angeles /ID# 148586 — Los Angeles, California, United States
• Univ of Colorado Cancer Center /ID# 148581 — Aurora, Colorado, United States

• Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles — Los Angeles, California, United States
• Children's Hospital Boston — Boston, Massachusetts, United States
• Dana-Farber Cancer Institute — Boston, Massachusetts, United States
• Fakultni nemocnice Brno — Brno, Czechia