1. Healthy Food America, Seattle, Washington 98122, USA
2. Department of Health Services, School of Public Health, University of Washington, Seattle, Washington 98195, USA;
3. Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, USA;
4. American Heart Association, National Center, Dallas, Texas 75231, USA;
5. Department of Nutrition, Gillings School of Global Public Health and Carolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27516, USA;