Höglund N, Rönn F, Tollefsen T, Jensen SM, Kesek M. U22 protocol as measure of symptomatic improvement after catheter ablation of atrial fibrillation. ujms [Internet]. 2013 Oct. 19 [cited 2026 Nov. 13];118(4). Available from: https://ujms.net/index.php/ujms/article/view/5945