1. Arrhythmias in heart disease in infants, children and adolescents;Roberts,1977
2. Congenital complete heart block an international study of the natural history;Michaelsson;Clin Cardiol,1972
3. Congenital complete AV block;Esscher,1978
4. Assessment and management of complete heart block in infancy;Esscher,1980
5. Congenital heart block;Wallgren;Acta Paediatr Scand,1938