1 Department of Public Health, Los Angeles County, Los Angeles, California, USA.
2 1] Department of Public Health, Los Angeles County, Los Angeles, California, USA [2] Fielding School of Public Health, University of California, Los Angeles, California, USA [3] Schools of Medicine, University of California, Los Angeles, California, USA.
3 1] Office of Public Health Genomics, Centers for Disease Control and Prevention, Atlanta, Georgia, USA [2] Epidemiology and Genomics Research Program, National Cancer Institute, Bethesda, Maryland, USA.
4 School of Medicine, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina, USA.