1. Houston Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
2. Department of Psychology, College of Life Sciences, University of California, Los Angeles, CA 90095, USA
3. Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
4. Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
5. UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA 15213, USA
6. Merck and Co., Kenilworth, NJ 07033, USA