<qa>  What was the main aim of the Korean Metabolic disorders Obesity StudyParticipants in this study were selected from the Korean Metabolic disorders Obesity Study in Elementary School children KMOSES, the main aim of which was to comprehensively assess obesity-related metabolic risk factors and to evaluate clinical outcomes in Korean children prospectively. Korean children who were participated in a school-based health examination, were reexamined for the 3-year follow-up assessment. 