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Line graphs showing changes of the areas (2D and 3D) of the mitral annulus during three phases (early, mid, and late) of the systole. 2DMAA, 2D area of the annulus; 3DMAA, 3D area of the annulus; 3DaMAA, 3D area of the anterior annulus; 3DpMAA, 3D area of the posterior annulus. *p<0.05 versus prior phase by post-hoc comparison test (Bonferroni's method).
