Pattern of congenital heart defects in children with Down syndrome at the University of Port Harcourt Teaching Hospital, Port Harcourt. NIGERIAN JOURNAL OF PAEDIATRICS, [S. l.], v. 39, n. 4, p. 164–167, 2024. Disponível em: https://www.njpaediatrics.com/index.php/njp/article/view/504.. Acesso em: 20 dec. 2024.