OC.11.5 BONE MASS DENSITY AND RISK FRACTURE IN PATIENTS WITH INFLAMMATORY BOWEL DISEASE: ROLE OF VITAMIN D AND OSTEOPROTEGERIN. (1st October 2020) - Miranda, A.; De Musis, C.; Ferrante, E.; Sgambato, D.; Gimigliano, F.; Iolascon, G.; Ciamarra, P.; Tuccillo, C.; Romano, M.