1. Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA.
2. Department of Psychiatry, Oregon Health & Science University; Portland, OR, USA.
3. Center to Improve Veteran Involvement in Care, VA Portland Health Care System, Portland, OR, USA.
4. Biostatistics Shared Resource, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA.
5. Division of Oncological Sciences, Oregon Health & Science University, Portland, OR, USA.