1 Department of Anesthesiology and Perioperative Medicine, Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, Hebei, China.
2 Department of Anesthesiology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Cangzhou, Hebei, China.
3 Department of Anesthesiology and Perioperative Medicine, Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, Hebei, China wjianhua1029@163.com.