Fig. 1From: Protocol of the VICTORIA study: personalized vitamin D supplementation for reducing or preventing fatigue and enhancing quality of life of patients with colorectal tumor - randomized intervention trialOverview of the study flow. Abbreviations: EORTC QLQ-FA12 European Organization for Research and Treatment of Cancer – Cancer related Fatigue; EORTC QLQ-C30 European Organization for Research and Treatment of Cancer – Core Quality of life questionnaire with 30 items; FACIT-F Functional Assessment of Chronic Illness Therapy-Fatigue; FACIT-F FWB Functional Assessment of Chronic Illness Therapy-Fatigue – Functional Well-being; GDS-15 Geriatric Depression Scale with 15 items; UICC Union for International Cancer ControlBack to article page