1. Department of Integrated Traditional Chinese and Western Medicine, the Second Xiangya Hospital, Central South University, Changsha, China
2. Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha, China
3. Hunan Academy of Chinese Medicine, Changsha, China
4. Teaching and Research Section of Clinical Nursing, Xiangya Hospital, Central South University, Changsha, China
5. Xiangya Nursing School, Central South University, Changsha, China