title: To truly look inside.
authors.forename: Paddy M
authors.initials: PM
authors.lastname: Barrett
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Topol
mesh_terms: D034201:Computers, Handheld; D004452:Echocardiography / Q000295:instrumentation*; D004867:Equipment Design; D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D019023:Stethoscopes / Q000266:history*