Fig. 2From: Relevance of the time interval between surgery and adjuvant radio (chemo) therapy in HPV-negative and advanced head and neck carcinoma of unknown primary (CUP)Association of time span from surgery to adjuvant therapy with progression free survival. Kaplan-Meier estimates of overall survival according to the implementation of adjuvant therapy within (< 55 d) and later than 55 d (≥ 55 d) after surgery (X2(1) = 2.32, p = 0.128)Back to article page