1. Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, Anhui, PR China
2. Department of Gastroenterology, Lujiang County People’s Hospital, Hefei, Anhui, PR China
3. Department of Gastroenterology and Hepatology, the Fourth Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
4. Department of Pathology, Lujiang County People’s Hospital, Hefei, Anhui, PR China