1. Department of Urology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Republic of Korea
2. Department of Urology, Haeundae Paik Hospital, Inje University College of Medicine, Busan 47392, Republic of Korea
3. Department of Biomedical Engineering, College of Medical Convergence, Catholic Kwandong University, Gangneung 25601, Republic of Korea
4. Department of Urology, SNU-SMG Boramae Medical Center, Seoul 07061, Republic of Korea