ABOURJILA A. GAMAL ELDIN, M.D.; AYMAN M. GABR, M.D.; AMR M. ELSOFY, M.D.; MOHAMED FAWZY, M.D.. "External Sphincter Injection of Onabotulinum-A Toxin in Treatment of Children with Bladder- Sphincteric Dyssynergia". The Medical Journal of Cairo University, 89, September, 2021, 2069-2073. doi: 10.21608/mjcu.2021.203393