1. Pathology Center; Shanghai General Hospital/Faculty of Basic Medicine; Shanghai Jiao Tong University School of Medicine; Number 280, South Chong-Qing Road Shanghai 200025 China
2. School of Basic Medical Sciences; Hubei University of Medicine; Shiyan 442000 Hubei Province China
3. Department of Pathology; Renmin Hospital of Wuhan University; No.99, Ziyang Road Wuchang District, Wuhan 430060 Hubei Province China
4. Department of Gastroenterology; Renmin Hospital of Wuhan University; No.99, Ziyang Road Wuchang District, Wuhan 430060 Hubei Province China