1. Department of Neurology, Second Affiliated Hospital; Key Laboratory of Cerebral Microcirculation, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, Shandong, People’s Republic of China
2. Department of Neurology, Medical College of Qingdao University, Qingdao 266021, Shandong, People’s Republic of China
3. Department of Emergency, Jining No. 1 People’s Hospital, Jining 272011, People’s Republic of China