1 Department of Epidemiology, UCLA Fielding School of Public Health, Los Angeles, CA, 90095, USA. koinoue@ucla.edu.
2 Medicine & Health Policy and Management, Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at UCLA, Los Angeles, CA, 90024, USA.
3 Department of Health Policy and Management, UCLA Fielding School of Public Health, Los Angeles, CA, USA.