1. Laboratory of Molecular Disease and Cell Regulation, Department of Biochemistry, School of Medicine, Gachon University, Incheon 406-840, Korea
2. Department of Surgery, Ajou University School of Medicine, Yeongto-gu, Suwon 443-380, Korea
3. Laboratory of Cancer Cell Biology, Department of Biochemistry, School of Medicine, Gachon University, Incheon 406-840, Korea
4. Gachon Medical Research Institute, Gil Medical Center, Incheon 405-760, Korea