Affiliation: | 1. Department of Urology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea;2. Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea;3. Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea |