1. Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea.
2. Maeil Asia Human Milk Research Center, Maeil Dairies Co., Ltd, 50, Jongno-1-gil, Jongno-Gu, Seoul 03142, Korea.