Sukumalchantra, Yosvi, Vipa Tongmitr, and Bajarisan Jumbala. 2023. “Cardioversion of chronic atrial fibrillation by asynchronized D.C. shock with the use of propranolol to prevent recurrence”. Siriraj Medical Journal 22 (12):1481-99. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/264647.