1. First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
2. National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin 300381, China
3. Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
4. Gansu University of Chinese Medicine, Lanzhou 730050, Gansu, China