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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Normal parasternal long-axis view (a) and subxiphoid view (b). RV = right ventricle, LV = left ventricle, MV = mitral valve, DA = descending aorta, AA = ascending aorta, and AV = aortic valve.