A study of the aetiology of bundle branch block.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002037:Bundle-Branch Block / Q000150:complications / Q000453:epidemiology* / Q000209:etiology*; D002648:Child; D005260:Female; D006801:Humans; D007494:Ireland; D008297:Male; D008875:Middle Aged