1. Department of Urology; Kangbuk Samsung Hospital; Sungkyunkwan University School of Medicine; Seoul South Korea
2. Department of Urology; School of Medicine; Gangneung Asan Hospital; Ulsan University; Gangneung South Korea
3. Centre for Cohort Studies; Total Healthcare Centre; Kangbuk Samsung Hospital; Sungkyunkwan University School of Medicine; Seoul South Korea
4. Department of Occupational and Environmental Medicine; Kangbuk Samsung Hospital; Sungkyunkwan University School of Medicine; Seoul South Korea
5. Department of Clinical Research Design & Evaluation; SAIHST; Sungkyunkwan University; Seoul South Korea