Department of Gastroenterology;
Fukushima Medical University;
School of Medicine;
Fukushima 9601247;
Japan;
Department of Endoscopy;
Fukushima Medical University Hospital;
Fukushima 9601295;
Japan;
Endoscopic; retrograde; cholangiopancreatography; Post-endoscopic; retrograde; cholangiopancreatography; pancreatitis; Prophylactic; pancreatic; stent;