Department of Internal Medicine;
Gastroenterology and Hepatobiliary Center;
Cheongju St.Mary's Hospital;
Cheongju 360-568;
South Korea;
Department of Internal Medicine;
Soonchunhyang University College of Medicine;
Institute for Digestive Research;
Digestive Disease Center;
Soonchunhyang University Hospital;
Seoul 140-743;
South Korea;
Division of Gastroenterology;
Department of Internal Medicine;
Eulji University College of Medicine;
Eulji University Hospital;
Daejeon 302-799;
South Korea;
Endoscopic; retrograde; cholangiopancreatography; Post-endoscopic; retrograde; cholangiopancreatography; pancreatitis; Duoble; guidewire; technique; Transpancrestic; precut; sphincterotomy;