1 From the Department of Respiratory and Critical Care Medicine, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, No. 15 Road, Yuquan, Beijing 100049, People's Republic of China.
2 Department of Neurology, The Affiliated Hospital of Chifeng University, No. 42 Street, Wangfu, Chifeng 024005, People's Republic of China.
3 Department of Nursing, School of Clinical Medicine, Chifeng University, No. 1 Road, Yingbin, Chifeng 024005, People's Republic of China.
4 Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, No. 15 Road, Yuquan, Beijing 100049, People's Republic of China.