Basworo, A. and Subagjo, A. (2021) “Cardio-vocal Syndrome as a Complication Patient with Severe Mitral Regurgitation and Moderate Aortic Regurgitation with Pulmonary Hypertension”, Qanun Medika - Medical Journal Faculty of Medicine Muhammadiyah Surabaya, 5(1), pp. 145–151. doi: 10.30651/jqm.v5i1.4775.