1. Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
2. The First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
3. National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
4. Chengdu Eighth People's Hospital (Geriatric Hospital of Chengdu Medical College), Chengdu, Sichuan, China.