title: Remote ambulatory real time monitoring via existing public telephone circuits.
mesh_terms: D000553:Ambulatory Care; D001698:Biomedical Engineering; D003142:Communication; D004562:Electrocardiography; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D013686:Telemetry / Q000295:instrumentation*; D013689:Telephone