Department of Gastroenterology and Shanghai Key Laboratory of Pancreatic Diseases;
Shanghai General Hospital;
Shanghai Jiaotong University School of Medicine;
Shanghai 201620;
China;
Hospitalist and Internal Medicine Inpatient Department;
Shanghai Jiahui International Hospital;
Shanghai 200233;
China;
Department of General Surgery;
Shanghai General Hospital;
Shanghai Jiaotong University School of Medicine;
Shanghai 201620;
China;
Department of Gastroenterology;
Shanghai Jiao Tong University Affiliated Sixth People's Hospital;
Shanghai 200233;
China;
Extrahepatic cholangiocarcinoma; Drug-eluting stent; Local chemotherapy; Gemcitabine; Cisplatin; Biliary obstruction;