Liposarcoma, Myxoid

• Children's Healthcare of Atlanta — Atlanta, Georgia, United States
• Lurie Children's Hospital of Chicago — Chicago, Illinois, United States
• Our Lady of the Lake Children's Hospital — Baton Rouge, Louisiana, United States
• Dana Farber Cancer Institute — Boston, Massachusetts, United States

• Northwestern University — Chicago, Illinois, United States

• Memorial Sloan Kettering at Basking Ridge (Limited Protocol Activities) — Basking Ridge, New Jersey, United States
• Memorial Sloan Kettering Monmouth (Limited Protocol Activities) — Middletown, New Jersey, United States
• Memorial Sloan Kettering Bergen (Limited Protocol Activities) — Montvale, New Jersey, United States
• Memorial Sloan Kettering Cancer Center Suffolk- Commack (Limited Protocol Activities) — Commack, New York, United States

• Krankenhaus Nordwest — Frankfurt, Germany
• National Center for Tumor Diseases — Heidelberg, Germany
• Universitätsklinikum Tübingen — Tübingen, Germany
• Istituto di Candiolo Fondazione del Piemonte per l'oncologia IRCCS — Candiolo, Italy

• MD Anderson Cancer Center — Houston, Texas, United States

• Dana-Farber Cancer Institute — Boston, Massachusetts, United States
• David H. Koch Center for Cancer Care at Memorial Sloan Kettering Cancer Center — New York, United States
• Sarah Cannon Research Institute — Nashville, Tennessee, United States
• UZ Leuven Europe Leuven — Leuven, Belgium

• Institut Bergonié — Bordeaux, France
• Centre Léon Berard — Lyon, France
• Istituto Clinico Humanitas — Rozzano, Milan, Italy
• Centro di Referimento Ocologico — Aviano, Italy

• The Netherlands Cancer Institute — Amsterdam, Netherlands

Not specified

• Fred Hutch Cancer Center — Seattle, Washington, United States