Department of General Surgery;
Gansu Provincial Hospital;
Lanzhou 730000;
Gansu Province;
China;
School of Clinical Medicine;
Ningxia Medical University;
Yinchuan 750000;
Ningxia Hui Autonomous Region;
China;
School of Clinical Medicine;
Gansu University of Chinese Medicine;
Lanzhou 730000;
Gansu Province;
China;
Clinical outcomes; Early enteral nutrition; Immune function; Nutritional status; Malignant obstructive jaundice; Cholangiocarcinoma;