Giovanni Mosiello, Pediatric NeuroUrology Research and Clinical Unit, Bambino Gesù Pediatric Hospital, Piazza Sant'Onofrio 4, 00165 Rome, ItalyGiulio Del Popolo, Spinal Unit and Neurourology Department, Careggi Hospital, Largo Brambilla 3, 50134 Florence, ItalyJian Guo Wen, Pediatric Urodynamic Center, First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Zhengzhou City, 450052, ChinaMario De Gennaro, Urology Unit, Bambino Gesù Pediatric Hospital, Piazza Sant'Onofrio 4, 00165 Rome, Italy