1. Department of Urology, Hanyang University College of Medicine, Seoul, Korea.
2. Department of Urology, Hanyang University Guri Hospital, Guri, Korea.
3. Center for Healthy Aging and Longevity of Hanyang University Institute of Aging Society, Seoul, Korea.
4. Department of Rehabilitation Medicine, Hanyang University College of Medicine, Seoul, Korea.
5. Department of Preventive Medicine, Hanyang University College of Medicine, Seoul, Korea.