Atrioventricular heart block--27-year follow-up experience.
D000293:Adolescent; D000328:Adult; D000337:Aerospace Medicine; D000368:Aged; D002170:Canada; D003327:Coronary Disease / Q000150:complications / Q000401:mortality; D005500:Follow-Up Studies; D006327:Heart Block / Q000150:complications / Q000401:mortality; D006801:Humans; D008297:Male; D008875:Middle Aged