aMedical Oncology and Immune-related Tumours, Centro di Riferimento Oncologico (CRO) di Aviano IRCCS, National Cancer Institute, Aviano

bDepartment of Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano

cProfessor of Pathology, Former Chairman of Department of Pathology, Centro di Riferimento Oncologico (CRO) di Aviano IRCCS, National Cancer Institute, Aviano, Italy

Correspondence to Antonino Carbone, MD, Centro di Riferimento Oncologico (CRO) di Aviano IRCCS, National Cancer Institute, Aviano, Italy. Tel: +39 0434 659085; e-mail: [email protected]