1. Department of Obstetrics and Gynecology, College of Medicine, The Catholic University of Korea, Seoul, 137-040, Korea
2. Catholic Research Institutes of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 137-040, Korea
3. Department of Dermato-Immunology, College of Medicine, The Catholic University of Korea, Seoul, 137-040, Korea
4. Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, 137-040, Korea
5. College of Pharmacy, Seoul National University, Seoul, 151-742, Korea