1. Department of Gastroenterology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, Henan 450003, China
2. Master of Chinese medicine (studies and applications of internal Chinese medicines), Hong Kong Baptist University, Kowloon Tong, Hong Kong
3. Xinxiang Medical University, Clinical Medicine College, Xinxiang, Henan 453000, China
4. The Third Affiliated Hospital Affiliated of Henan University of Traditional Chinese Medicine, Zhengzhou, Henan 450003, China