Affiliation: | 1. Department of Gastroenterology, Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China 2. Department of Gastroenterology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China 3. Institute of Digestive Disease and Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China 4. Department of Pathology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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