1. Division of Food Bioscience and Technology, College of Life Sciences and Biotechnology; Korea University; Seoul; 136-701; South Korea
2. Department of Informational Statistics, College of Sciences and Technology; Korea University; Jochiwon; 339-700; South Korea
3. Division of Animal Science; Chonnam National University; Gwangju; 500-757; South Korea
4. Division of Biotechnology, College of Life Sciences and Biotechnology; Korea University; Seoul; 136-701; South Korea
5. Department of Laboratory Medicine, College of Medicine; Dankook University; Cheonan; 330-715; South Korea
6. R&D Center; Maeil Dairies Co; Gyeonggi-do; 451-861; South Korea
7. Department of Internal Medicine, College of Medicine; Kyung Hee University; Seoul; 134-727; South Korea