1 Medical Oncology Unit, ICS Maugeri-IRCCS SpA SB, Pavia, Italy; Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy. Electronic address: erica.quaquarini@icsmaugeri.it.
2 Medical Oncology Unit, ICS Maugeri-IRCCS SpA SB, Pavia, Italy.