Acute urinary retention in a 4-year-old girl. Issue 6 (26th March 2019) - Capalbo, Daniela; Guarino, Stefano; Iannuzzo, Gianpiero; Cirillo, Mario; Miraglia del Giudice, Emanuele; La Manna, Angela; Apicella, Andrea; Marzuillo, Pierluigi