[1] Azienda Osped Univ Pisana, Unit Med Oncol 2, I-56126 Pisa, Italy
[2] Univ & Gen Hosp, Dept Oncol, I-33100 Udine, Italy
[3] Garibaldi Nesima Hosp, Dept Oncol, I-95122 Catania, Italy
[4] Humanitas Clin & Res Ctr, Humanitas Canc Ctr, Med Oncol & Hematol Unit, I-20089 Rozzano, MI, Italy
[5] IRCCS, Inst Canc Res & Treatment, I-10060 Candiolo, TO, Italy
[6] Osped Riuniti, Unit Med Oncol, I-60126 Ancona, Italy
[7] San Carlo Hosp, Unit Med Oncol, I-85100 Potenza, Italy
[8] Campus Biomed Univ, Med Oncol, I-00128 Rome, Italy
[9] Gen Hosp, Dept Med Oncol, I-59100 Prato, Italy
[10] Ist Ospitalieri Cremona, Med Oncol Div, I-26100 Cremona, Italy
[11] Natl Canc Inst IRCCS Giovanni Paolo II, Unit Med Oncol, I-70124 Bari, Italy
[12] Natl Canc Inst IRCCS, Med Oncol, I-20133 Milan, Italy
[13] IOV IRCCS, Med Oncol, I-35128 Padua, Italy
[14] Univ Cagliari, Univ Hosp, Unit Med Oncol, I-09124 Cagliari, Italy
[15] IRCCS Fdn G Pascale, Natl Canc Inst, Gastrointestinal Oncol, I-80131 Naples, Italy
[16] Perrino Hosp, Unit Med Oncol, I-72100 Brindisi, Italy
[17] Univ Verona, Unit Med Oncol, I-37126 Verona, Italy
[18] Careggi Univ Hosp, Unit Med Oncol, I-50134 Florence, Italy
[19] Vito Fazzi Hosp, Unit Oncol, I-73100 Lecce, Italy
[20] ULSS 8 Berica East Dist, San Bortolo Gen Hosp, Dept Oncol, I-36100 Vicenza, Italy