title: Reply to Dr Aveline.
authors.forename: De Q H
authors.initials: DQ
authors.lastname: Tran
authors.forename: Francisca
authors.initials: F
authors.lastname: Bernucci
authors.forename: Andrea P
authors.initials: AP
authors.lastname: González
authors.forename: Roderick J
authors.initials: RJ
authors.lastname: Finlayson
mesh_terms: D001917:Brachial Plexus / Q000000981:diagnostic imaging*; D006801:Humans; D009407:Nerve Block / Q000379:methods*; D018084:Ultrasonography, Interventional / Q000379:methods*