Caseous Mitral Annular Calcification - Rare Cause of Severe Mitral Valvular Dysfunction - Siljanovska, Mimi; Siljanovski, Nikola; Milacic, Branka; Jovanoski, Mario; Lazareska, Menka; Georgievska Ismail, Ljubica (National Society of Cardiology of North Macedonia, 2022)