RESULTS OF A COLORECTAL SCREENING PROGRAMME BELOW THE FIT THRESHOLD OF 100 NG/ML (20UG/G) - Matias, DJ; Rodríguez Martín, L; Villar Lucas, C; Quiñones Castro, R; Pérez Fernández, R; Diez Rodríguez, R; Jiménez Palacios, M; Jorquera Plaza, F; Vivas Alegre, S (Endoscopy, 2019)