1. Department of Surgery, Brigham and Women’s Hospital, Boston, Massachusetts, USA
2. Center for Sarcoma and Bone Oncology, Dana-Farber/Brigham and Women’s Cancer Center, Boston, Massachusetts, USA
3. Department of Surgery, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
4. Department of Surgical Oncology, Princess Margaret Cancer Centre and Mount Sinai Hospital, Toronto, Ontario, Canada
5. Department of Surgery, University of Toronto, Toronto, Ontario, Canada