1 The Department of Anesthesia, The Second Affiliated Hospital of Inner Mongolia Medical University, NO.59 Kerqin South Road, Hohhot, Inner Mongolia Autonomous Region, 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. Electronic address: qiuyi00061@163.com.