title: Speaking tubes for bedside use.
authors.forename: H
authors.initials: H
authors.lastname: Cantrell
mesh_terms: D000669:Amplifiers, Electronic; D003142:Communication; D006311:Hearing Disorders / Q000523:psychology*; D006801:Humans; D011369:Professional-Patient Relations; D013067:Speech Perception; D019023:Stethoscopes