1. Nutrition Policy Institute, Division of Agriculture and Natural Resources, University of California, 1111 Franklin Street, Eleventh Floor, Oakland, CA 94607, USA
2. Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street, 2nd Floor, San Francisco, CA 94158-2549, USA
3. School of Public Health, University of California, Berkeley, 2121 Berkeley Way West, Suite 6120, Berkeley, CA 94720, USA
4. Research, Evaluation, and Strategic Alignment Section of the Nutrition Education and Obesity Prevention Branch (NEOPB), Center for Healthy Communities, California Department of Public Health, 1616 Capitol Avenue, Sacramento, CA 95814, USA