1 Critical Care Medicine, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China. Electronic address: 894859580@qq.com.
2 Respiratory & Critical Care Medicine, Ysbyty Gwynedd Hospital, Bangor, Wales, United Kingdom; School of Medical Sciences, Bangor University, Bangor, Wales, United Kingdom. Electronic address: csubbe@hotmail.com.
3 Intensive Care Unit, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. Electronic address: 530148416@qq.com.
4 Xiangya School of Nursing, Central South University, Changsha 410013, Hunan, China. Electronic address: luozhen1340@csu.edu.cn.
5 Orthopedics Department, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. Electronic address: pll98124@126.com.