1. Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea.
2. Department of Clinical Nutrition Science, The Graduate School of Clinical Health Sciences, Ewha Womans University, Seoul 120-750, Korea.
3. Huh's Diabetes Clinic & the 21C Diabetes and Vascular Research Institute, Seoul 121-806, Korea.