1. Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon 24341, Korea
2. Department of Medical Environmental Biology and Tropical Medicine, Kangwon National University School of Medicine, Chuncheon 24341, Korea
3. Department of Pharmacology, Kangwon National University School of Medicine, Chuncheon 24341, Korea
4. Institute of Medical Sciences, Department of Urology, Kangwon National University School of Medicine, Chuncheon 24341, Korea