[1
]Department of Medical Oncology National Cancer Institute of Milan Milan Italy
[2
]Leon Berard Center Claude Bernard University Lyon 1, UNICANCER Hospital Network Lyon
France
[3
]Department of Radiation Oncology Dana‐Farber/Brigham and Women's Cancer Center Boston
Massachusetts
[4
]Department of Surgical Oncology Curie Institute, University of Paris–Sciences and
Letters Paris France
[5
]Department of Pathology Leiden University Medical Center Leiden Netherlands
[6
]Department of Surgery National Cancer Institute of Milan Milan Italy
[7
]Taiwan Cancer Registry Center Taipei Taiwan
[8
]Institute of Epidemiology and Preventive Medicine College of Public Health National
Taiwan University Taipei Taiwan
[9
]Department of Medical Oncology Ludwig Center at Harvard Medical SchoolDana‐Farber
Cancer Institute Boston Massachusetts
[10
]Department of Pathobiology and Laboratory Medicine University of Toronto/Mount Sinai
Hospital Toronto Ontario Canada
[11
]Department of Medical Oncology Peter MacCallum Cancer Center Melbourne Victoria Australia
[12
]Department of Oncology Skane University Hospital and Lund University Lund Sweden
[13
]Department of Medical Oncology Leiden University Medical Center Leiden Netherlands
[14
]Department of Medicine Memorial Sloan Kettering Cancer Center New York New York
[15
]Weill Cornell Medical College New York New York
[16
]Division of Hematology/Oncology The Hospital for Sick Children Toronto Ontario Canada
[17
]Princess Margaret Cancer Center Toronto Ontario Canada
[18
]Department of Radiotherapy Netherlands Cancer Institute Amsterdam Netherlands
[19
]Department of Radiotherapy Leiden University Medical Center Amsterdam Netherlands
[20
]Department of Surgery the Royal Marsden National Health Service Foundation Trust London
United Kingdom
[21
]Sarcoma Unit, Mannheim University Medical Center University of Heidelberg Mannheim
Germany
[22
]Department of Orthopedics University of Utah Salt Lake City Utah
[23
]Sarcoma Unit Royal Marsden NHS Foundation Trust/Institute of Cancer Research London
UK
[24
]Department of Musculoskeletal Oncology National Cancer Center Hospital Tokyo Japan
[25
]Department of Radiation Oncology Duke University Medical Center Durham North Carolina
[26
]Division of Pediatrics The University of Texas MD Anderson Cancer Center Houston Texas
[27
]Medical Oncology Gustave Roussy Institute Villejuif, Ile‐de‐France France
[28
]Division of Cancer Registration and Surveillance National Cancer Center, Ilsandong‐gu
Goyang‐si Republic of Korea
[29
]Department of Epidemiology, Regional Health Council, Biomedical Research Institute
of Murcia‐Arrixaca Murcia University Murcia Spain
[30
]Unit of Oncogenetics and Functional Oncogenomics Aviano IRCCS Oncology Referral Center
Aviano Italy
[31
]Epidemiology Unit and Girona Cancer Registry, Oncology Coordination Plan Department
of Health Autonomous Government of Catalonia Catalan Institute of Oncology Girona
Spain
[32
]Medical Oncology Department University Hospital Virgen del Rocio Sevilla Spain
[33
]National Cancer Registry Section, Center for Cancer Registries, Center for Cancer
Control and Information Services, National Cancer Center Tokyo Japan
[34
]Department of Sarcoma Medical Oncology The University of Texas MD Anderson Cancer
Center Houston Texas
[35
]Department of Surgery Brigham and Women's Hospital Boston Massachusetts
[36
]Center for Sarcoma and Bone Oncology Dana‐Farber Cancer Institute Harvard Medical
School Boston Massachusetts
[37
]Department of Interdisciplinary Cancer Management Moffitt Cancer Center Tampa Florida
[38
]Department of Soft Tissue/Bone Sarcoma and Melanoma Maria Sklodowska‐Curie National
Research Institute of Oncology Warsaw Poland
[39
]Department of Pathology University Hospital of Padova Padova Italy
[40
]Department of Pathology Brigham and Women's HospitalHarvard Medical School Boston
Massachusetts
[41
]Department of Oncology the Norwegian Radium HospitalOslo University Hospital Oslo
Norway
[42
]Garvan Institute of Medical Research Sydney New South Wales Australia
[43
]Department of Medical Oncology Netherlands Cancer Institute Amsterdam Amsterdam Netherlands
[44
]Department of Surgical Oncology Netherlands Cancer Institute Amsterdam Netherlands
[45
]Department of Registration Netherlands Comprehensive Cancer Organization Utrecht Netherlands
[46
]Department of Hematology and Medical Oncology Fox Chase Cancer Center Philadelphia
Pennsylvania
[47
]Department of Medicine University of Colorado Cancer Center Aurora Colorado
[48
]Evaluative Epidemiology Unit Department of Research National Cancer Institute of Milan
Milan Italy