1 The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, Gansu, 730030, China. Electronic address: qxyznl@163.com.
2 The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, Gansu, 730030, China.
3 Anesthesia and Pain Medical Center, Gansu Hospital of Traditional Chinese Medicine, Lanzhou, Gansu, 730050, China. Electronic address: chunaixx@163.com.