Annular Pancreas: Endoscopic and Pancreatographic Findings From a Tertiary Referral ERCP Center: 47. (October 2017) - Gromski, Mark A.; Sherman, Stuart; Lehman, Glen A.; Watkins, James L.; McHenry, Lee; Easler, Jeffrey J.; El Hajj, Ihab I.; Fogel, Evan L.