Sahan, Suzan, Murat Karamanlioglu, and Ekrem Sahan. 2023. “Relationship Between Mitral Annular Calcification and First Degree Atrioventricular Block in Elderly”. Annals of Medical Research 30 (8):905-9. http://www.annalsmedres.org/index.php/aomr/article/view/4482.