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