1. Sarcoma Service, Department of Surgery, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
2. Midlands Abdominal and Retroperitoneal Sarcoma Unit, Queen Elizabeth Hospital, University Birmingham Hospital NHS Trust, Birmingham, United Kingdom
3. Department of Surgery, ASST dei Sette Laghi, Varese, Italy
4. Anesthesia and Intensive Care Unit, Department of Critical and Supportive Care, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
5. Unit of Clinical Epidemiology and Trial Organization, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
6. Nuclear Medicine, Department of Radiotherapy, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
7. Università degli Studi di Milano, Milan, Italy