1. Department of Surgery, College of Medicine, Chungbuk National University, Cheongju 361-763, Korea.
2. Department of Pathology, College of Medicine, Chungbuk National University, Cheongju 361-763, Korea.
3. Department of Physiology, College of Medicine, Chungbuk National University, Cheongju 361-763, Korea.
4. Department of Pharmacology, College of Medicine, Chungbuk National University, Cheongju 361-763, Korea.
5. BK21 Chungbuk Biomedical Science Center, School of Medicine, Chungbuk National University, Cheongju 361-763, Korea.
6. Department of Preventive Medicine, College of Medicine, Chungbuk National University, Cheongju 361-763, Korea.
7. Department of Internal Medicine, College of Medicine, Chungbuk National University, Cheongju 361-763, Korea.
8. Department of Pediatrics, College of Medicine, Chungbuk National University, Cheongju 361-763, Korea.
9. Department of Physiology, School of Medicine, Shanghai Jiaotong University, Shanghai 200240, China.