1. Department of Physiology, Chungbuk National University, College of Medicine, Cheongju, Korea.
2. Department of Physiology, Nagoya City University Medical School, Nagoya, Japan.
3. Department of Physiology, College of Medicine, Shanghai Jiaotong University, Shanghai, P.R. China.
4. Department of Pharmacology, Chungbuk National University, College of Medicine, Cheongju, Korea.
5. Department of Pathology, Samsung Medical Center, SungKyunKwan University, Seoul, Korea.