title: Country cardiograms case 37. Normal sinus rhythm.
authors.affiliation: Tumbler Ridge, BC.
authors.forename: Charles
authors.initials: C
authors.lastname: Helm
mesh_terms: D000328:Adult; D001146:Arrhythmia, Sinus / Q000209:etiology / Q000503:physiopathology; D004562:Electrocardiography; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000503:physiopathology*; D017574:Parasystole