title: Ultrasound and percutaneous tracheostomy.
authors.forename: M B
authors.initials: MB
authors.lastname: Walker
authors.forename: S J
authors.initials: SJ
authors.lastname: Tanser
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D009333:Neck / Q000000981:diagnostic imaging*; D014139:Tracheostomy / Q000379:methods*; D018084:Ultrasonography, Interventional