1. Department of Neurology, Northwestern University, 303 E. Chicago Avenue, Ward 12-140, IL 60611, USA
2. Section of Infectious Disease & Global Health, University of Chicago, 5841 S. Maryland Avenue, MC 5065, Chicago, IL 60637, USA
3. Department of Teaching Management, Wuhan University School of Medicine, Wuhan, Hubei Province, P R China
4. Department of Physiology, Wuhan University School of Basic Medical Science, Wuhan, Hubei Province, P R China