Zhaocong Chen, Xi Chen, Peng Liu, Dongfeng Huang* and Hanjun Liu*
* Corresponding authors: Dongfeng Huang huangdf@mail.sysu.edu.cn - Hanjun Liu lhanjun@mail.sysu.edu.cn
BMC Neuroscience 2012, 13:55 doi:10.1186/1471-2202-13-55