title: The authors respond.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Elia
authors.forename: Giovanni
authors.initials: G
authors.lastname: Ferrari
authors.forename: Paola
authors.initials: P
authors.lastname: Molino
authors.forename: Marcella
authors.initials: M
authors.lastname: Converso
authors.forename: Giovanna
authors.initials: G
authors.lastname: De Filippi
authors.forename: Alberto
authors.initials: A
authors.lastname: Milan
authors.forename: Franco
authors.initials: F
authors.lastname: Aprà
mesh_terms: D002406:Catheterization, Peripheral / Q000295:instrumentation*; D002408:Catheters, Indwelling; D005260:Female; D006801:Humans; D008297:Male; D018084:Ultrasonography, Interventional / Q000295:instrumentation*