[1] San Giuseppe Moscati Hosp, Avellino, Italy
[2] Univ Naples 2, Naples, Italy
[3] Univ Toronto, Princess Margaret Hosp, Toronto, ON, Canada
[4] Cross Canc Inst, Edmonton, AB T6G 1Z2, Canada
[5] La Maddalena Clin, Palermo, Italy
[6] AO Morgagni Pierantoni, Forli, Italy
[7] Ist Oncol Veneto, Padua, Italy
[8] Durham Reg Canc Ctr, Oshawa, ON, Canada
[9] Natl Canc Inst, Clin Trials Unit, Naples, Italy