Lu Feng, Wei Wang, Jiansong Cheng, Yi Ren, Guang Zhao, Chunxu Gao, Yun Tang, Xueqian Liu, Weiqing Han, Xia Peng, Rulin Liu, Lei Wang
Proc Natl Acad Sci U S A. 2007 March 27; 104(13): 5602–5607. Published online 2007 March 19. doi: 10.1073/pnas.0609650104