Asian Institute of Gastroenterology;
Baldota Institute of Digestive Sciences, Gastro-enterology and Endocrinology;
MedIndia Hospitals, Department of Gastroenterology;
Apollo Hospital Delhi, Department of Gastro-enterology;
Medanta, Gastroenterology and Hepatology;
King Chulalongkorn Memorial Hospital, Department of Medicine;
Cipto Mangunkusumo Hospital, Department of Internal Medicine, Faculty of Medicine;
National University Hospital, Department of Gastroenterology and Hepatology;
Per; oral; cholangiopancreatoscopy; Intraductallithotripsy; Indeterninate; biliary; strictures; Cholangioscopy; Pancreatoscopy;