title: Electrocardiogram of the month.
authors.forename: L
authors.initials: L
authors.lastname: Smith
authors.forename: J W
authors.initials: JW
authors.lastname: Watson
mesh_terms: D000328:Adult; D001281:Atrial Fibrillation / Q000175:diagnosis* / Q000209:etiology; D004562:Electrocardiography; D005260:Female; D006337:Heart Murmurs; D006801:Humans; D006980:Hyperthyroidism / Q000150:complications*; D015431:Weight Loss