1. Department of Community Health Sciences, Fielding School of Public Health, UCLA Center for Population Health and Health Disparities, Los Angeles, California, USA
2. Department of Biostatistics, Fielding School of Public Health, UCLA Center for Population Health and Health Disparities, Los Angeles, California, USA
3. UCLA Center for Population Health and Health Disparities, Los Angeles, California, USA
4. Department of Health Policy and Management, Fielding School of Public Health, UCLA Center for Population Health and Health Disparities, Los Angeles, California, USA
5. UCLA Center for Population Health and Health Disparities Department of Health Management & Policy, Drexel University, Philadelphia, Pennsylvania, USA