Authors: Hai Song; Kinglun Kingston Mak; Lilia Topol; Kangsun Yun; Jianxin Hu; Lisa Garrett; Yongbin Chen; Ogyi Park; Jia Chang; R Mark Simpson; Cun-Yu Wang; Bin Gao; Jin Jiang; Yingzi Yang Journal: Proc Natl Acad Sci U S A Date: 2010-01-08 Impact factor: 11.205