Survival and tumour progression have been examined in five large controlled studies involving a total of 2833 patients, of which four were double-blind placebo-controlled studies and one was an open- label study.
La sopravvivenza e la progressione tumorale sono state analizzate in cinque ampi studi controllati, coinvolgenti un totale di 2833 pazienti, di cui quattro studi in doppio cieco e controllati con placebo e uno studio in aperto.