CGQL, Cleveland Global Quality of Life; DASS, Depression Anxiety Stress Scales; EORTC, European Organisation for Research and Treatment of Cancer; FACT-C, Functional Assessment of Cancer Therapy questionnaire with the colorectal module; GIQLI, Gastrointestinal Quality of Life Index; HADS, Hospital Anxiety and Depression Scale; IBDQ, Inflammatory Bowel Disease Questionnaire; MRS, Mood Rating Scale; NHP, Nottingham Health Profile; PANAS, positive and negative affect schedule; QoL, quality of life; VascuQoL, a validated instrument assessing pain, symptoms, activities, social life and emotional state in patients with vascular disease.