1. Section of Public and Population Health, University of California at Los Angeles School of Dentistry, Los Angeles, CA, USA
2. Center for Health Research, Kaiser Permanente, Portland, OR, USA
3. UCLA Center for Cancer Prevention and Control Research, UCLA Kaiser Permanente Center for Health Equity, Department of Health Policy and Management, Fielding School of Public Health and Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA, USA