T05.02.8 FECAL CALPROTECTIN AND ULTRASONOGRAPHY AS NON-INVASIVE SCREENING TOOLS FOR DETECTING COLORECTAL POLYPS IN CHILDREN WITH SPORADIC RECTAL BLEEDING: A PROSPECTIVE STUDY. (1st October 2020) - Ziparo, C.; Vassallo, F.; Esposito, F.; Corleto, V.D.; Di Giulio, E.; Cocco, C.; Quatrini, M.; Villa, M.P.; Di Nardo, G.