1. Division of Surgical Oncology, Department of Surgery, Brigham and Women's Hospital; Harvard Medical School; Boston Massachusetts
2. Center for Sarcoma and Bone Oncology, Dana-Farber Cancer Institute; Harvard Medical School; Boston Massachusetts
3. Department of Medical Statistics, Biometry and Bioinformatics; IRCCS Foundation National Cancer Institute; Milan Italy
4. Department of Surgery; Royal Marsden Hospital NHS Foundation Trust; London United Kingdom
5. Department of Surgical Oncology; Mount Sinai Hospital and Princess Margaret Cancer Centre; Toronto Ontario Canada
6. Department of Surgery; University of Toronto; Toronto Ontario Canada
7. Division of Surgical Oncology and Thoracic Surgery; Mannheim University Hospital; Mannheim Germany
8. Department of Surgical Oncology; Netherlands Cancer Institute; Amsterdam The Netherlands
9. Department of Soft Tissue/Bone Sarcoma and Melanoma; Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology; Warsaw Poland
10. Department of Surgery; IRCCS Foundation National Cancer Institute; Milan Italy
11. Department of Cancer Medicine; IRCCS Foundation National Cancer Institute; Milan Italy
12. Department of Radiation Oncology; Netherlands Cancer Institute; Amsterdam The Netherlands
13. Department of Surgery; Gustave Roussy Institute; Villejuif France
14. Division of Surgical Oncology, Department of Surgery; Ohio State University Medical Center; Columbus Ohio
15. Department of Surgery; Curie Institute; Paris France