Long-term outcome of endoscopic dual pancreatobiliry sphincterotomy in patients with manometry-documented sphincter of Oddi dysfunction and normal pancreatogram. - Park,S.H.; Watkins,J.L.; Fogel,E.L.; Sherman,S.; Lazzell,L.; Bucksot,L.; Lehman,G.A. (Gastrointest Endosc, 2003)