1.College of Acupuncture and Massage, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China. 2. School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617. 3. School of Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617. 4. Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin 301617. 5. National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin 300381