Endosonography and magnetic resonance cholangiopancreatography show similar efficacy in selecting patients for ERCP in mild-moderate acute biliary pancreatitis - Alper, Emrah; Akay, Sinan; BUYRAÇ, Zafer; Aslan, Fatih; ALPER, Işık; Ünsal, Belkıs (Turkish Journal of Gastroenterology, 2012)