1 Department of Operating Room, Huhhot First Hospital, No.150 South Second Ring Road, Hohhot, Inner Mongolia, 010030, China.
2 The Department of Anesthesia, The Second Affiliated Hospital of Inner Mongolia Medical University, NO.59 Kerqin South Road, Hohhot, Inner Mongolia Autonomous Region, China.
3 The Department of Anesthesia, The Second Affiliated Hospital of Inner Mongolia Medical University, NO.59 Kerqin South Road, Hohhot, Inner Mongolia Autonomous Region, China. Electronic address: fuxueqiang333@126.com.