1. Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, United States
2. Harold C Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, United States
3. Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, United States
4. Department of Pharmacology, University of California, San Diego, La Jolla, United States
5. Moores Cancer Center, University of California San Diego, La Jolla, United States
6. Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
7. Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, United States