1. Department of Neurology, The First affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
2. Department of Neurology, People's Hospital of Zhengzhou University, Zhengzhou, Henan, China
3. Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND, USA
4. College of Engineering, California State University, Los Angeles, CA, USA
5. Scott & White Neuroscience Institute, Texas A & M Health Science Center, College of Medicine, Temple, TX, USA