Bi C
Department of Anesthesiology, Central Hospital of Dalian University of Technology, No. 826 Southwest Road, Shahekou District, Dalian, Liaoning Province, China. bcj0411@126.com.
Department of Anesthesiology, Central Hospital of Dalian University of Technology, No. 826 Southwest Road, Shahekou District, Dalian, Liaoning Province, China. bcj0411@126.com.