| http://www.w3.org/ns/prov#value | - The heart is constituted of four types of valves: the pulmonary and tricuspid valves on the left and the aortic and mitral valves on the right. ??? ???Valvular Heart Disease???, Valvular heart disease refers to several disorders and diseases of the heart valves, which are the tissue flaps that regulate the flow of blood through the four chambers of the heart. ??? ???Valvular Heart Disease Informat
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