“Comparing with transthorasic echocardiography and transesopheagia! echocardiography methods for measurement of aort vaive area ”, Ann Med Res , vol. 5, no. 4, pp. 0271–0274, May 2021, Accessed: Jan. 12, 2026. [Online]. Available: http://annalsmedres.org/index.php/aomr/article/view/2701