title: ECG response: July 23, 2013.
authors.affiliation: West Roxbury VA Hospital, Section of Cardiology, 1400 VFW Parkway, West Roxbury, MA 02132, USA. ppodrid@circulationjournal.org
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Podrid
mesh_terms: D000368:Aged; D018880:Atrial Premature Complexes / Q000175:diagnosis* / Q000503:physiopathology*; D003955:Diagnostic Tests, Routine; D004562:Electrocardiography / Q000379:methods*; D006329:Heart Conduction System / Q000502:physiology*; D006801:Humans; D008297:Male