Santini, Daniele, Marco Imperatori, Bruno Vincenzi, and Giuseppe Tonini. 2014. “The Challenge of Anti-EGFR Therapy-Rechallenge in Management of Metastatic Colorectal Cancer”. European Journal of Oncology and Environmental Health 19 (1S): 36-39. https://mattioli1885journals.com/index.php/EJOEH/article/view/4261.