Evolution of gastrointestinal endoscopy in the mainland of China.
Bai
Yu
Y
Evidence-Based Medicine Group, Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.
Li
Zhao-shen
ZS
D002681:China; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000706:statistics & numerical data; D016099:Endoscopy, Gastrointestinal / Q000379:methods / Q000706:statistics & numerical data; D019160:Endosonography