1 The First School of Clinical Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China.
2 The Second Medical College, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China.
3 The Acupuncture, Moxibustion and Rehabilitation School of Clinical Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China.
4 The First School of Clinical Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China; The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China. Electronic address: liumery@163.com.