1. Unit of General Surgery and Surgical Oncology, Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy
2. Unit of General Surgery San Matteo Hospital, 27100 Pavia, Italy
3. Peritoneal Tumors Unit, IRCCS Regina Elena National Cancer Institute, 00144 Rome, Italy
4. Unit of Surgical Oncology, Soft Tissue Tumors, Department of Oncology, Azienda Ospedaliera di Rilievo Nazionale e di Alta Specializzazione Garibaldi, 95123 Catania, Italy
5. Department of Clinical and Experimental Sciences, University of Brescia, ASST Spedali Civili, 25123 Brescia, Italy
6. Candiolo Cancer Institute, FPO–IRCCS, Candiolo, 10060 Torino, Italy
7. General, Emergency and Trauma Surgery, Pisa University Hospital, 56122 Pisa, Italy
8. Surgical Unit of Peritoneum and Retroperitoneum, Fondazione Policlinico Universitario A. Gemelli–IRCCS, 00168 Rome, Italy
9. Surgery and Advanced Oncological Therapy Unit, Ospedale GB. Morgagni-L. Pierantoni, AUSL Forlì, 47121 Forlì-Cesena, Italy
10. Unit of Emergency General Surgery and Surgical Oncology, AOU Policlinico di Modena, 41125 Modena, Italy
11. Unit of PSG and OBI, Azienda Ospedaliera Universitaria G. Martino, 98124 Messina, Italy
12. CRS and HIPEC Unit, Pietro Valdoni, Umberto I Policlinico di Roma, 00161 Roma, Italy
13. Unit of Ovarian Carcinoma, Fondazione Policlinico Universitario A. Gemelli–IRCCS, 00168 Rome, Italy