title: [Fundamentals of signal-averaged electrocardiography and progress in the detection of small potential variations on the body surface].
authors.affiliation: Department of Internal Medicine, Showa University Fujigaoka Hospital.
authors.forename: S
authors.initials: S
authors.lastname: Mashima
authors.forename: M
authors.initials: M
authors.lastname: Hara
authors.forename: K
authors.initials: K
authors.lastname: Hirayanagi
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000503:physiopathology; D018780:Body Surface Potential Mapping / Q000379:methods*; D004594:Electrophysiology; D006801:Humans; D012849:Sinoatrial Node / Q000503:physiopathology