1. Department of Anesthesiology, The Second Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
2. Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
3. Research Center for Medicine and Biology, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
4. Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
5. Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China