1. Department of Medical Nutrition, Research Institute of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Korea.
2. Systems-oriented Global Childhood Obesity Intervention Program, Department of Epidemiology and Environmental Health, University at Buffalo, The State University of New York, 816 Kimball Tower, Buffalo, NY 14214-8001, USA.
3. Korea Institute of Child Care and Education, Seoul 06750, Korea.
4. MEI Technologies, NASA Information Technology and Multimedia Services contract, Houston, TX 77058, USA.
5. Johnson Space Center, Human Research Program, National Aeronautics and Space Administration (NASA), Houston, TX 77058, USA.