Urinary Bladder Neck Obstruction

• Royal Hospital, Department of Urology — Sulaymaniyah, Kurdistan, Iraq

• Ain Shams University Hospitals — Cairo, Cairo Governorate, Egypt

• Department of Obstetrics and Gynecology, National Taiwan University Hospital — Taipei, Taiwan

• Kessler Institute for Rehabilitation — West Orange, New Jersey, United States
• Trustees of The University of Pennsylvania | Penn Urology Washington Square — Philadelphia, Pennsylvania, United States
• Centre Hospitalier Universitaire de Bordeaux | Pellegrin Hospital - Urology Department — Bordeaux, France
• Assistance Publique Hopitaux de Paris | Pitie Salpetriere University Hospital - Urology Department — Paris, France

• David Geffen school of Medicine at UCLA, Department of Urology — Los Angeles, California, United States
• UMC ST Radboud Nijmegen, Department of Urology — Nijmegen, Netherlands
• Klinika Urology, Akademi Medycznej — Warsaw, Poland
• Clinical Research Unit, Morriston Hospital, Swansea NHS Trust — Swansea, United Kingdom

• National Taiwan University Hospital — Taipei, Taiwan

Not specified

• National Taiwan University Hospital — Taipei, Taiwan

• National Taiwan University Hospital — Taipei, Taiwan

• Samsung Medical Center — Seoul, South Korea