https://sites.tufts.edu/foodcompass/research/data/

https://youtu.be/rwZGGsTSzYo

http://nems-upenn.org/wp-content/uploads/2019/10/Rationale_for_Stores_Measures.pdf

http://nems-upenn.org/wp-content/uploads/2019/11/DCHD_2018_NEMS_Report.pdf

https://snaped.fns.usda.gov/library/materials/nutrition-environment-measures-survey-store-measures