1. a Northwest Hepatitis C Resource Center , Portland VA Medical Center , Portland, OR, USA
2. b Research Division , Portland VA Medical Center , Portland, OR, USA
3. c Behavioral Health & Clinical Neurosciences Division , Portland VA Medical Center , Portland, OR, USA
4. d Department of Psychiatry , Oregon Health and Science University , Portland, OR, USA
5. f Washington State University , Pullman, WA, USA
6. g George Fox University , Portland, OR, USA
7. h Pacific University , Forest Grove, OR, USA
8. i Department of Psychiatry , University of California at San Diego , San Diego, CA, USA
9. e Department of Behavioral Neurosciences , Oregon Health and Science University , Portland, OR, USA