Nguyen A¹, Aschkenazi S¹, Gamble T¹, Botros S¹, Sand P¹, Goldberg R¹
1. Evanston Northwestern University

Mohindra M¹, Kramer H¹, Cao G¹, FitzGerald M P¹
1. Loyola University Medical Center

Chung J M¹, Lee S D², Kwon D D³, Kim K S⁴, Kim S Y⁵, Park K H⁶, Park Y H⁷, Pai K S⁸, Suh H J⁹, Lee J W¹⁰, Ha T S¹¹, Han S W¹²
1. Kosin University College of Medicine, Department of Urology, Busan, Korea, 2. College of Medicine, Pusan National University, Department of Urology, Busan, Korea, 3. Chonnam National University Hwasun Hospital, Department of Urology, Hwasun, Korea, 4. University of Ulsan, Asan Medical Center, Department of Urology, Seoul, Korea, 5. College of Medicine, Pusan National University, Department of Pediatrics, Busan, Korea, 6. Sungkyunkwan University Samsung Medical Center, Department of Urology, Seoul, Korea, 7. Yeungnam University Medical Center, Department of Pediatrics, Daegu, Korea, 8. Ajou University Medical Center, Department of Pediatrics, Suwon, Korea, 9. Our Lady of Mercy Hospital, The Catholic University of Korea, Department of Urology, Incheon, Korea, 10. Kangnam Sacred Heart Hospital, Hallym University, Department of Pediatrics, Seoul, Korea, 11. Chungbuk National University Hospital, Department of Pediatrics, Cheongju, Korea, 12. Yonsei University Severance Hospital, Department of Urology, Seoul, Korea

Tikkinen K A O¹, Ala-Lipasti M A², Tammela T³, Auvinen A⁴
1. Department of Urology, Medical School and School of Public Health, Tampere University Hospital and University of Tampere, 2. Department of Surgery and Medical School, Seinäjoki Central Hospital and University of Tampere, 3. Department of Urology and Medical School, Tampere University Hospital and University of Tampere, 4. Tampere School of Public Health, University of Tampere, Finland

Chung J M¹, Lee S D², Kang D I³, Kim K S⁴, Kim S Y⁵, Park K H⁶, Park Y H⁷, Pai K S⁸, Suh H J⁹, Lee J W¹⁰, Ha T S¹¹, Han S W¹²
1. Kosin University College of Medicine, Department of Urology, Busan, Korea, 2. College of Medicine, Pusan National University, Department of Urology, Busan, Korea, 3. InJe University College of Medicine, Department of Urology, Busan, Korea, 4. University of Ulsan, Asan Medical Center, Department of Urology, Seoul, Korea, 5. College of Medicine, Pusan National University, Department of Pediatrics, Busan, Korea, 6. Sungkyunkwan University Samsung Medical Center, Department of Urology, Seoul, Korea, 7. Yeungnam University Medical Center, Department of Pediatrics, Daegu, Korea, 8. Ajou University Medical Center, Department of Pediatrics, Suwon, Korea, 9. Our Lady of Mercy Hospital, The Catholic University of Korea, Department of Urology, Incheon, Korea, 10. Kangnam Sacred Heart Hospital, Hallym University, Department of Pediatrics, Seoul, Korea, 11. Chungbuk National University Hospital, Department of Pediatrics, Cheongju, Korea, 12. Yonsei University Severance Hospital, Department of Urology, Seoul, Korea

Bower W¹, Ng C F¹, Yip S K¹
1. Chinese University of Hong Kong

El-Azab A¹, Imam H²
1. Female Urology Unit, Urology Department, Assiut University Hospital, Assiut university, Assiut, Egypt, 2. Gastroenterology unit, Internal Medicine Department, Assiut University Hospital, Assiut university, Assiut, Egypt

Al-Mandeel H¹, Ross S², Robert M², Milne J²
1. King Khalid University Hospital, Riyadh, Saudi Arabia, 2. University of Calgary, Calgary, Canada