1. Department of Urology, CHA Gangnam Medical Center, CHA University, Seoul, Korea.
2. Fertility Center, CHA Gangnam Medical Center, CHA University, Seoul, Korea.
3. Department of Genetics, CHA Gangnam Medical Center, CHA University, Seoul, Korea.
4. Department of Pathology, CHA Gangnam Medical Center, CHA University, Seoul, Korea.
5. Department of Urology, Yonsei University, Wonju College of Medicine, Wonju, Korea.