De Palma, Giovanni D Endoscopic approach to malignant strictures at the hepatic hilum. [electronic resource] - World journal of gastroenterology Aug 2007 - 4042-5 p. digital Publication Type: Editorial; Review ISSN: 1007-9327 Standard No.: 10.3748/wjg.v13.i30.4042 doi Subjects--Topical Terms: Bile Duct Neoplasms--pathologyCholangitis--etiologyDrainage--adverse effectsEndoscopy--methodsHepatic Duct, Common--pathologyHumansRisk FactorsStents