1. Kwak S, Woo T, Lee KA, Lee KH. A comparison of dietary habits and influencing factors for vegetable preferences of adolescents in Gyeongnam province. Korean J Community Nutr. 2015; 20(4):259–272.
4. Bernardi S, Pallanti S. Internet addiction: a descriptive clinical study focusing on comorbidities and dissociative symptoms. Compr Psychiatry. 2009; 50(6):510–516.
5. Hur MH. Demographic, habitual, and socioeconomic determinants of Internet addiction disorder: an empirical study of Korean teenagers. Cyberpsychol Behav. 2006; 9(5):514–525.
6. Lai CM, Mak KK, Watanabe H, Jeong J, Kim D, Bahar N, Ramos M, Chen SH, Cheng C. The mediating role of Internet addiction in depression, social anxiety, and psychosocial well-being among adolescents in six Asian countries: a structural equation modelling approach. Public Health. 2015; 129(9):1224–1236.
7. Ha JH, Kim SY, Bae SC, Bae S, Kim H, Sim M, Lyoo IK, Cho SC. Depression and Internet addiction in adolescents. Psychopathology. 2007; 40(6):424–430.
8. Kim Y, Park JY, Kim SB, Jung IK, Lim YS, Kim JH. The effects of Internet addiction on the lifestyle and dietary behavior of Korean adolescents. Nutr Res Pract. 2010; 4(1):51–57.
9. Park KA. Dietary and lifestyle habits and dietary behaviors according to level of smartphone addiction in university students in Kyungnam Province. J Korean Diet Assoc. 2017; 23(4):408–430.
10. Dorgan JF, Liu L, Klifa C, Hylton N, Shepherd JA, Stanczyk FZ, Snetselaar LG, Van Horn L, Stevens VJ, Robson A, Kwiterovich PO Jr, Lasser NL, Himes JH, Pettee Gabriel K, Kriska A, Ruder EH, Fang CY, Barton BA. Adolescent diet and subsequent serum hormones, breast density, and bone mineral density in young women: results of the dietary intervention study in children follow-up study. Cancer Epidemiol Biomarkers Prev. 2010; 19(6):1545–1556.
11. Harrington JM, Young DJ, Essader AS, Sumner SJ, Levine KE. Analysis of human serum and whole blood for mineral content by ICP-MS and ICP-OES: development of a mineralomics method. Biol Trace Elem Res. 2014; 160(1):132–142.
12. Nennich TD, Harrison JH, VanWieringen LM, St-Pierre NR, Kincaid RL, Wattiaux MA, Davidson DL, Block E. Prediction and evaluation of urine and urinary nitrogen and mineral excretion from dairy cattle. J Dairy Sci. 2006; 89(1):353–364.
13. Song WY, Hong JH, Park EJ, Lee HW, Choi JH. Effect of antioxidative vitamin supplementation on mineral contents in the hair and autistic related behaviors in Autistic Children. J Korean Soc Food Sci Nutr. 2010; 39(2):237–243.
14. Han TH, Lee J, Kim YJ. Hair zinc level analysis and correlative micronutrients in children presenting with malnutrition and poor growth. Pediatr Gastroenterol Hepatol Nutr. 2016; 19(4):259–268.
15. Choi WS, Kim SH, Chung JH. Relationships of hair mineral concentrations with insulin resistance in metabolic syndrome. Biol Trace Elem Res. 2014; 158(3):323–329.
16. National Information Society Agency (KR). Development of Korean smartphone addiction proneness scale for youth and adults 2011. Seoul: National Information Society Agency;2011.
17. Seo HJ, Park MA, Jang JS. Affecting factors on food habits related health behavior activities of adolescents. Korean J Food Nutr. 2017; 30(2):297–304.
18. Seo IK, Lee YS. Effects of adolescents' stress on academic achievement and the control effect of social support: a comparative study of middle and high school students. J Youth Welf. 2017; 19(3):23–51.
19. Lee YS, Kim LS, Cho EH, Lee HS. A study on adolescents' perceptions of smart phone uses: with a focus on the FGI of middle and high school users. Korea J Youth Couns. 2013; 21(1):43–66.
20. Lee KE, Kim SH, Ha TY, Yoo YM, Han JJ, Jung JH, Jang JY. Dependency on smartphone use and its association with anxiety in Korea. Public Health Rep. 2016; 131(3):411–419.
21. AlAbdulwahab SS, Kachanathu SJ, AlMotairi MS. Smartphone use addiction can cause neck disability. Musculoskelet Care. 2017; 15(1):10–12.
22. Musaiger AO, Al-Mannai M. Association between exposure to media and body weight concern among female university students in five Arab countries: a preliminary cross-cultural study. J Biosoc Sci. 2014; 46(2):240–247.
23. Suk MS, Ku YG. The Effects of individual, family, and school factors on smart-phone addiction of adolescents. J Youth Welf. 2016; 18(1):53–77.
24. Bartel KA, Gradisar M, Williamson P. Protective and risk factors for adolescent sleep: a meta-analytic review. Sleep Med Rev. 2015; 21:72–85.
25. Bassett SM, Lupis SB, Gianferante D, Rohleder N, Wolf JM. Sleep quality but not sleep quantity effects on cortisol responses to acute psychosocial stress. Stress. 2015; 18(6):638–644.
26. Haug S, Castro RP, Kwon M, Filler A, Kowatsch T, Schaub MP. Smartphone use and smartphone addiction among young people in Switzerland. J Behav Addict. 2015; 4(4):299–307.
27. Kim EJ, Kim SY. Correlation between smartphone addiction and eating behaviors of elementary school students in Ansan Area. J Korean Soc Food Sci Nutr. 2015; 44(7):1007–1015.
28. Rayman MP. Selenium and human health. Lancet. 2012; 379(9822):1256–1268.
29. Ashraf U, Kanu AS, Mo Z, Hussain S, Anjum SA, Khan I, Abbas RN, Tang X. Lead toxicity in rice: effects, mechanisms, and mitigation strategies--a mini review. Environ Sci Pollut Res Int. 2015; 22(23):18318–18332.
30. Kim JE, Shin JM, Ko JY, Ro YS. Hair mineral analysis in children with atopic dermatitis. Ann Dermatol. 2017; 29(2):251–253.
31. Kim HY, Lee JY, Yang HR. Nutrient intakes and hair mineral contents of young children. Pediatr Gastroenterol Hepatol Nutr. 2016; 19(2):123–129.