1. Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
2. The Social Innovation and Urban Opportunity Lab, Streetwyze UCSF and San Francisco State University, Oakland, CA, USA
3. Roots Community Health Center, Oakland, CA, USA
4. College of Education and Integrative Studies, California State Polytechnic University, Pomona, CA, USA
5. Department of Africana Studies, San Francisco State University