1School of Anesthesiology, Shandong Second Medical University, Weifang, 261053, Shandong, China
2Department of Neurology, Weifang Second People’s Hospital, Weifang, China
3Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
4Qingdao Central Hospital, University of Health and Rehabilitation Sciences (Qingdao Central Hospital), Qingdao, China