title: The least expensive diagnostic tool.
authors: N M
authors: NM
authors: Rosenberg
authors: M N
authors: MN
authors: Cruz
authors: J M
authors: JM
authors: Chamberlain
authors: S R
authors: SR
authors: Knazik
mesh_terms: D001049:Apnea / Q000175:diagnosis* / Q000628:therapy; D004636:Emergency Service, Hospital; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008487:Medical History Taking / Q000379:methods