1 Department of Spleen and Stomach Diseases, Yunnan Provincial Hospital of Traditional Chinese Medicine, Medical School, Yunnan University of Chinese Medicine, YunNan, China.
2 Department of Gastroenterology, South China Hospital, Medical School, Shenzhen University, Shenzhen, China.
3 Department of Gastroenterology, The First People's Hospital of Yunnan Province, The Affliated Hospital of Kunming University of Science and Technology, YunNan, China.