Qi Liu, Han Zhou, Lin Liu, Xi Chen, Ruixin Zhu* and Zhiwei Cao*
* Corresponding authors: Ruixin Zhu rxzhu@tongji.edu.cn - Zhiwei Cao zwcao@tongji.edu.cn
BMC Bioinformatics 2011, 12:294 doi:10.1186/1471-2105-12-294