1. Fondazione IRCCS Istituto Nazionale dei Tumori; Sarcoma Service; Via G. Venezian 1 Milano Italy 20133
2. Istituto Oncologico Veneto, IOV-IRCCS; Surgical Oncology Unit; Via Gattamelata 64 Padova Veneto Italy 35128
3. Uppsala Cancer Clinic; Uppsala Cancer Clinic; Box 833 Uppsala Sweden 75108
4. Zhongshan Hospital, Fudan University; Department of General Surgery, Institute of General Surgery; 180 Fenglin Road, Xuhui District Shanghai Shanghai China 200032
5. Anhui Provincial Cancer Hospital, the First Affiliated Hospital of University of Science and Technology of China (The Western Area); Department of Medical Oncology; Hefei Anhui China
6. Bispebjerg Hospital, Region H; Cochrane Colorectal Cancer Group; Bispebjerg Bakke 23 Building 39N Copenhagen NV Denmark 2400
7. IOV-IRCCS; Istituto Oncologico Veneto; Padova Italy 35100