1. Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072 Sichuan, China
2. School of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
3. Departments of Acupuncture and Massage, Changchun University of Chinese Medicine, Changchun 130117 Jilin, China
4. College of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China