title: The sniffing and extension-extension position: the need to develop the clinical relevance.
authors.forename: K B
authors.initials: KB
authors.lastname: Greenland
mesh_terms: D019416:Head Movements; D006801:Humans; D007442:Intubation, Intratracheal / Q000379:methods*; D007828:Laryngoscopy; D008279:Magnetic Resonance Imaging