1. Research Service, VA San Diego Healthcare System , San Diego, CA, USA
2. Department of Radiation Medicine and Applied Sciences, University of California San Diego , La Jolla, CA, USA
3. Department of Radiology, University of California San Diego , La Jolla, CA, USA
4. Department of Bioengineering, University of California San Diego , La Jolla, CA, USA
5. Medical Scientist Training Program, University of California San Diego , La Jolla, CA, USA
6. Biomedical Science Program, University of California San Diego , La Jolla, CA, USA
7. VA Informatics and Computing Infrastructure, VA Salt Lake City Healthcare System (VINCI) , Salt Lake City, UT, USA
8. Department of Internal Medicine, Division of Epidemiology, University of Utah School of Medicine , Salt Lake City, UT, USA
9. Department of Medicine, University of California San Diego , La Jolla, CA, USA
10. Department of Urology, University of California San Diego , La Jolla, CA, USA
11. Center for Behavioral Genetics of Aging, University of California San Diego , La Jolla, CA, USA
12. Center of Excellence for Stress and Mental Health (CESAMH), VA San Diego Healthcare System , San Diego, CA, USA