title: Ultrasound versus nerve stimulator: what's missing and is it really important?
authors.forename: J Lee
authors.initials: JL
authors.lastname: White
mesh_terms: D000765:Anesthesia, Conduction / Q000379:methods*; D006801:Humans; D015201:Meta-Analysis as Topic; D009407:Nerve Block / Q000379:methods*; D018084:Ultrasonography, Interventional / Q000379:methods*