Gonchar, M., A. Boichenko, and I. Kondratova. “Issues of Differential Diagnosis of the Patent Foramen Ovale and Congenital Heart Disease - Secondary Atrial Septal Defect in Newborns in the Early Neonatal Period”. Experimental and Clinical Medicine, Vol. 77, no. 4, July 2020, pp. 43-49, https://ecm.knmu.edu.ua/article/view/408.