Application of endoscopic retrograde cholangiopancreatography combined with intraductal ultrasonography in differential diagnosis of enign and malignant biliary stricture and nursing management (经内镜逆行性胰胆管造影术联合胆管腔内超声在良恶性胆管狭窄鉴别诊断中的应用及护理) - YANG Min (杨敏); HU Jifen (胡继芬) (中西医结合护理, 2023)