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1 Lifestyle, Dietary Behavior and Snack Preference of Upper-grade Elementary School Students in Cheongju according to the Usage Time of Smartphones
Hayeon Kim, Munkyong Pae
Korean J Community Nutr.2017;22(1):40-52.   Published online 2017 February 28     DOI: http://dx.doi.org/10.5720/kjcn.2017.22.1.40
      

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