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1 Lower-Income Predicts Increased Smartphone Use and Problematic Behaviors Among Schoolchildren During COVID-19 Related School Modification: A Longitudinal Study
Eun Sil Her, Sangha Lee, Su-Jin Yang, LiHae Park, Mi Gyeong Park, Seong-Ju Kim, Yunmi Shin
J Korean Med Sci.2022;37(28):e225.  Published online 2022 July 6     DOI: http://dx.doi.org/10.3346/jkms.2022.37.e225
      
2 Associations of Caffeinated Beverage Consumption and Screen Time with Excessive Daytime Sleepiness in Korean High School Students
Nuri Jun, Aeri Lee, Inkyung Baik
Clin Nutr Res.2017;6(1):55-60.   Published online 2017 January 25     DOI: http://dx.doi.org/10.7762/cnr.2017.6.1.55
      
3 Associations between dietary patterns and screen time among Korean adolescents
Jae Yeon Lee, Nuri Jun, Inkyung Baik
Nutr Res Pract.2013;7(4):330-335.   Published online 2013 August 7     DOI: http://dx.doi.org/10.4162/nrp.2013.7.4.330
      

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