A. V. Kuleshov. “MITRAL REGURGITATION IN CHILDREN WITH MITRAL VALVE PROLAPSE. FEATURES OF ECHOCARDIOGRAPHIC INDICATORS”. Eastern Ukrainian Medical Journal 7, no. 3 (September 29, 2019): 226–232. Accessed July 27, 2026. https://eumj.med.sumdu.edu.ua/index.php/journal/article/view/39.