Department of Internal Medicine;
Hallym University Sacred Heart Hospital;
Hallym University College of Medicine;
Anyang 431-070;
South Korea;
Department of Internal Medicine;
University of Ulsan College of Medicine;
Asan Medical Center;
Seoul 138-736;
South Korea;
Endoscopic; retrograde; cholangiopancrea-tography; Post-endoscopic; retrograde; cholangiopancreatography; pancreatitis; Risk; factor; Prevention; of; post-endoscopic; retrograde; cholangiopancreatography; pancreatitis; Pancreatic; stents; Nonsteroidal; antiinflammatory; drugs;