1. Joint Doctoral Program in Public Health (Epidemiology), San Diego State University/University of California San Diego, La Jolla, CA, USA
2. Herbert Wertheim School of Public Health and Human Longevity Science, University of California San Diego, La Jolla, CA, USA;
3. Department of Family Medicine and Public Health, School of Medicine, University of California San Diego, La Jolla, CA, USA;
4. Department of Radiology, School of Medicine, University of California San Diego, La Jolla, CA, USA