P.05.53 APPROPRIATENESS OF PRIMARY CARE REFERRALS TO "OPEN ACCESS" GASTROINTESTINAL ENDOSCOPY: A REAL-LIFE EXPERIENCE. (25th March 2019) - Milano, A.; Di Bucchianico, A.; Efthymakis, K.; Laterza, F.; Bonitatibus, A.; Insolia, E.; Neri, M.