1. Zhongshan Affiliated Hospital, Guangzhou University of Chinese Medicine (Zhongshan Hospital of Traditional Chinese Medicine), Zhongshan, China.
2. The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
3. Clinical Research Centre, South China Research Centre for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China.