1 Department of Biochemistry and Molecular Biology (BK21 Project), Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea.
2 Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Republic of Korea.
3 Molecular Imaging & Therapy Branch, National Cancer Center, 809 Madu1dong Ilsandonggu Goyangsi, Gyeonggydo 410-769, Republic of Korea.
4 Department of Obstetrics and Gynecology, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea.
5 Department of Physiology, College of Medicine, Kyung Hee University, Seoul 130-731, Republic of Korea.
6 Department of Biochemistry and Molecular Biology (BK21 Project), Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea. Electronic address: wchoe@khu.ac.kr.