1. Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, Colorado, USA.
2. Division of Cancer Prevention and Control, University of Colorado Cancer Center, Aurora, Colorado, USA.
3. Department of Medical Oncology, Rocky Mountain Cancer Centers-Boulder, Boulder, Colorado, USA.
4. Department of Psychology, Utah State University, Logan, Utah, USA.
5. Division of General Internal Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA.