1 Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA. kala.mehta@ucsf.edu.
2 Department of Biology, San Francisco State University, San Francisco, CA, USA.
3 Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA.
4 Department of Medicine, University of California San Francisco, San Francisco, CA, USA.
5 Department of Sociology, University of Maryland, College Park, MD, USA.
6 Office of Minority Health Research Coordination, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA.