Feng Cao, Roger A. Wagner, Kitchener D. Wilson, Xiaoyan Xie, Ji-Dong Fu, Micha Drukker, Andrew Lee, Ronald A. Li, Sanjiv S. Gambhir, Irving L. Weissman, Robert C. Robbins, Joseph C. Wu
PLoS One. 2008; 3(10): e3474. Published online 2008 Oct 22. doi: 10.1371/journal.pone.0003474