1. School of Nursing, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China
2. Department of Gastroenterology, Guangdong Second Provincial General Hospital, Guangzhou 510030, Guangdong, China
3. Department of Orthopedic, Traditional Chinese Medicine Hospital, Puning, Jieyang 515300, China
4. Department of Spine Surgery, Guangdong Second Provincial General Hospital, Guangzhou 510030, Guangdong, China