1 Department of Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy.
2 Medical Oncology Unit 1, IRCCS AOU San Martino-IST, Genoa, Italy.
3 Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy.
4 Laboratory of Methodology for Clinical Research, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy.
5 Laboratory of Methodology for Clinical Research, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy. Electronic address: valter.torri@marionegri.it.