Source:
Heather D’Angelo, PhD, Alice Ammerman, DrPH, RD, Penny Gordon-Larsen, PhD, Laura Linnan, ScD, Leslie Lytle, PhD, and Kurt M. Ribisl, PhD. Sociodemographic Disparities in Proximity of
Schools to Tobacco Outlets and Fast-Food Restaurants. AJPH ; September 2016, Vol 106, No. 9
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