1. Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
2. Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
3. Department of Public Health, Korea University, Seoul, Korea
4. Health and Wellness College, Sungshin Women's University, Seoul, Korea
5. Medical Research Institute, College of Medicine, Ewha Womans University, Seoul, Korea