1. Graduate student, Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea.
2. Scientific officer, Functional Food Research Division, Ministry of Food and Drug Safety, Cheongju, Korea.
3. Professor, Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea.
4. Professor, Research Institute of Human Ecology, College of Human Ecology, Seoul National University, Seoul, Korea.