Ansari, SM, S Haider, MA Awal, N Khanam, and AB Siddique. 2009. “Cardiac Complications of Hyperthyroidism: Echocardiographic Evaluation of 69 Hyperthyroid Patients”. TAJ: Journal of Teachers Association 17 (1):6-9. https://doi.org/10.3329/taj.v17i1.3481.