Jigang He, Zhenya Shen*, Yunsheng Yu, Haoyue Huang, Wenxue Ye, Yinglong Ding and Shaolei Yang
* Corresponding author: Zhenya Shen uuzyshen@yahoo.com.cn
Journal of Cardiothoracic Surgery 2012, 7:27 doi:10.1186/1749-8090-7-27