Abstract

Journal of Cerebral Blood Flow & Metabolism (2008)
Following the online publication of this article, the author indicated that the following funding information should also be included: This work was supported partially by Grant no. QD64 from Nanjing University of Information Science & Technology, Grant no. 30400103 from National Science Foundation of China, and Grand no. 2006CB705700-05 from National Basic Research Subject of China (973 Subject).
