title: Editorial comment.
authors.affiliation: Division of Pediatric Urology, Regina Margherita Children's Hospital, Citta della Salute a della Scienza di Torino, Turin, Italy.
authors.forename: Emilio
authors.initials: E
authors.lastname: Merlini
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D012075:Remission, Spontaneous; D014513:Ureter / Q000002:abnormalities*; D014517:Ureteral Obstruction / Q000628:therapy*; D014564:Urogenital Abnormalities / Q000628:therapy*