1. University of California–Irvine, Irvine Chao Family Comprehensive Cancer Center, Orange, CA;
2. Columbia University Medical Center, New York, NY;
3. University of California–San Diego, San Diego Moores Cancer Center, La Jolla, CA;
4. Sarah Cannon Research Institute, Nashville, TN;
5. Memorial Sloan-Kettering Cancer Center, New York, NY;
6. University of Texas MD Anderson Cancer Center, Houston, TX;
7. Stanford University School of Medicine, Stanford, CA; and
8. Gilead Sciences, Foster City, CA