A Phase II Exploratory Study to Identify Biomarkers Predictive of Clinical Response to Regorafenib in Patients with Metastatic Colorectal Cancer Who Have Failed First-Line Therapy oleh Karen Gambaro, Maud Marques, Suzan McNamara, Mathilde Couetoux du Tertre, Cyrla Hoffert, Archana Srivastava, Anna Schab, Thierry Alcindor, Adrian Langleben, Lucas Sideris, Mahmoud Abdelsalam, Mustapha Tehfe, Felix Couture, Gerald Batist, Petr Kavan