title: Speaking tubes for bedside use.
authors.forename: M
authors.initials: M
authors.lastname: Armstrong
authors.forename: P L
authors.initials: PL
authors.lastname: Efros
mesh_terms: D000669:Amplifiers, Electronic; D006311:Hearing Disorders / Q000175:diagnosis*; D006801:Humans; D013063:Speech Discrimination Tests / Q000295:instrumentation*; D013067:Speech Perception; D013069:Speech Reception Threshold Test