Affiliation: | 1. Department of Pathology, Tianjin Huanhu Hospital, Tianjin 300350, P. R. China;2. Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin 300350, P. R. China;3. Department of Gastroenterology, The First Hospital of China Medical University, Shenyang 110001, P. R. China |