Mode of action of maintenance immunotherapy therapy with the TLR-9 agonist MGN1703 in metastatic colorectal carcinoma: the Phase III IMPALA study. Issue 2 (December 2015) - Stein, Alexander; Kapp, Kerstin; Scheithauer, Werner; Salazar, Ramon; Ducreux, Michel; Waddell, Tom; Arnold, Dirk; Tournigand, Christophe; Sobrero, Alberto; Van Cutsem, Eric; Schmidt, Manuel; Cunningham, David