1. Biomedicine Research Center and Basic Medical College, Baotou Medical College, Inner Mongolia, PRC
2. Department of Neurology, University of California San Francisco, San Francisco, CA, USA
3. Department of Oral and Maxillofacial Surgery, University of California San Francsico, San Francisco, CA, USA
4. Department of Neurology, First Affiliated Hospital of Baotou Medical College, Inner Mongolia, PRC
5. Institute for Hypoxia Medicine, Capital Medical University, Beijing, PRC