T. K. Mohammed, A. J. Al-ibrahemi, and M. R. Al-Haleem, “The Effect of Age with Other Risk Factors and on Clinical Presentations of Patients with Atrial Fibrillation”, Kufa Jour. Nurs. Sci., vol. 4, no. 3, pp. 111–122, Dec. 2014, doi: 10.36321/kjns.vi20143.2758.