Relation between left atrial dimension and duration of atrial fibrillation.
D000368:Aged; D001281:Atrial Fibrillation / Q000209:etiology / Q000473:pathology*; D006332:Cardiomegaly / Q000473:pathology; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013997:Time Factors