[1] Ewha Womans Univ, Dept Prevent Med, Sch Med, Seoul, South Korea
[2] Seoul Natl Univ, Coll Med, Div Child & Adolescent Psychiat, Dept Psychiat, Seoul, South Korea
[3] Seoul Natl Univ, Coll Med, Inst Human Behav Med, Seoul, South Korea
[4] Kyung Hee Univ, Dept Food & Nutr, Seoul, South Korea
[5] Dankook Univ, Dept Prevent Med, Coll Med, Cheonan, South Korea
[6] Ewha Womans Univ, Dept Obstet Med, Coll Med, Seoul, South Korea
[7] Seoul Natl Univ, Coll Med, Dept Prevent Med, Seoul, South Korea
[8] Ewha Womans Univ, Dept Nutr Sci & Food Management, Seoul, South Korea
[9] Simon Fraser Univ, Dept Hlth Sci, Vancouver, BC, Canada