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