1. Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea.
2. Department of Food and Nutrition, Hannam University, Daedeok Valley Campus, Daejeon 305-811, Korea.
3. Department of Food and Nutrition, Kyung Hee University, Seoul 130-701, Korea.