1 Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China; The School of Traditional Chinese Medicine, Xiamen University Malaysia, Selangor, Malaysia.
2 Department of Blood Transfusion, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, China.
3 Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China; The School of Clinical Medicine, Fujian Medical University, Fuzhou, China. Electronic address: hwf0625@xmu.edu.cn.