Abbreviations: WIC, special supplemental nutrition program for
women, infants, and children; BMI, body mass index; CDC, Centers for
Disease Control and Prevention; GIS, geographic information systems.
* Corresponding author. Division of Gastroenterology and Nutrition,
The Children’s Hospital of Philadelphia, 34th Street and Civic Center
Boulevard, Philadelphia, PA 19104. Fax: +1-215-590-0604.
E-mail address: burdette@email.chop.edu (H.L. Burdette).