Zulkarnine, MI, BMM Choudhury, MF Islam, and N Ahmed. 2011. “Congenital Absence of Pericardium: A Rare Case Associated With Severe Mitral Stenosis With Pulmonary Hypertension”. Cardiovascular Journal 3 (2):222-25. https://doi.org/10.3329/cardio.v3i2.9193.