Endoscopic Retrograde Pancreatography and Secretin-Pancreozymin Test in Diagnosis of Chronic Pancreatitis: A Comparative Evaluation - Dobrilla, G.; Fratton, A.; Valentini, M.; Vantini, I.; Cavallini, G.; Angelini, G.; Mirachian, R.; Mora, R. (Endoscopy, 1976)