1. The Second Clinical College, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong, China (mainland)
2. Department of Acupuncture and Moxibustion, The Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong, China (mainland)
3. Department of Traditional Chinese Medicine, The Fourth Hosipital of Changsha City, Changsha, Hunan, China (mainland)