Validity of Estimation of Pulmonary artery Pressure Using Continuous wave Doppler Echocardiography in Patient with Patent Ductus Arteriosus (PDA). University Heart Journal, [S. l.], v. 7, n. 1, p. 10–12, 2012. DOI: 10.3329/uhj.v7i1.10202. Disponível em: https://www.banglajol.info/index.php/UHJ/article/view/10202. Acesso em: 1 jul. 2026.