Velocity time integral for right upper pulmonary vein in VLBW infants with patent ductus arteriosus . Clinics, [S. l.], v. 71, n. 10, p. 580–585, 2016. DOI: 10.6061/clinics/2016(10)05. Disponível em: https://journals.usp.br/clinics/article/view/122232.. Acesso em: 9 jun. 2024.