F Cappuzzo1, D R Camidge2, M Varella-Garcia2. 1. Department of Medical Oncology, Istituto Toscano Tumori-Ospedale Civile di Livorno, Livorno, Italy. Electronic address: f.cappuzzo@googlemail.com. 2. Departments of Medicine/Medical Oncology; Pathology, University of Colorado Denver, Aurora, USA.