1. College of Life Science (JY.C., W.P., YJ.L.), Institute of Biotechnology, Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Korea
2. College of Pharmacy (SK.L.), Seoul National University, Seoul 151-742, Korea
3. Department of Obstetrics and Gynecology (W.A.), Catholic Research Institutes of Medical Science, College of Medicine, The Catholic University of Korea, Seoul 137-701, Korea