1. Department of Food Science and Nutrition, Catholic University of Daegu, Geumnak-ro 5, Hayang-eup, Gyeongsan-si, Gyeongbuk 712-702, Korea.
2. Department of Obstetrics and Gynecology, Daegu Catholic Univ. Medical Center, Daegu 705-718, Korea.
3. Department of Food and Nutrition, Daegu University, Gyeongbuk 712-714, Korea.