title: Variability of inspired oxygen concentration with nasal cannulas.
authors.forename: R J
authors.initials: RJ
authors.lastname: Davies
authors.forename: J M
authors.initials: JM
authors.lastname: Hopkin
mesh_terms: D002404:Catheterization; D006801:Humans; D008397:Masks; D010100:Oxygen / Q000008:administration & dosage*
chemical_list: D010100:Oxygen