OC.01.4 SAFETY AND EFFICACY OF DUAL EMISSION ENDOSCOPIC LASER TREATMENT IN PATIENTS WITH UPPER OR LOWER GASTROINTESTINAL VASCULAR LESIONS CAUSING CHRONIC ANAEMIA: RESULTS FROM THE FIRST MULTI-CENTRE COHORT STUDY. (September 2021) - Tontini, G.E.; Dioscoridi, L.; Rimondi, A.; Cantù, P.; Cavallaro, F.; Giannetti, A.; Elli, L.; Pastorelli, L.; Pugliese, F.; Mutignani, M.; Vecchi, M.