KESEK, M.; RÖNN, F.; TOLLEFSEN, T.; HÖGLUND, N.; NÄSLUND, U.; JENSEN, S. M. Symptomatic improvement after catheter ablation of supraventricular tachycardia measured by the arrhythmia-specific questionnaire U22. Upsala Journal of Medical Sciences, v. 116, n. 1, p. 52–59, 16 Nov. 2010.