Corresponding Author

Bing-Rong Liu

Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000 Henan Province, P.R. China

Henan Provincial Key Laboratory of Digestive Endoscopy Minimally Invasive Therapy Innovative Technology Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000 Henan Province, P.R. China

Correspondence

Dr. Bing-Rong Liu, Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, No.1, East Jianshe Road, Zhengzhou 450000, Henan Province, P.R. China; Henan Provincial Key Laboratory of Digestive Endoscopy Minimally Invasive Therapy Innovative Technology Medicine, The First Affiliated Hospital of Zhengzhou University, No.1, East Jianshe Road, Zhengzhou 450000, Henan Province, P.R. China Tel: +86-0371-66913114 Fax: +86-0371-66913114

Email: bbnngrrnuu789@163.com