Höglund , N., C. Sahlin, M. Kesek, S. M. Jensen, and K. A. Franklin. “Cardioversion of Atrial Fibrillation Does Not Affect Obstructive Sleep Apnea”. Upsala Journal of Medical Sciences, vol. 122, no. 2, Mar. 2017, pp. 114–118, doi:10.1080/03009734.2017.1291545.