LUBIS, B.; TJIPTA, G. D.; PANJAITAN, A. J. O.; RAID, N.; SIREGAR, H. Congenital Malformation Among Newborns at Dr. Pirngadi Hospital Medan During 1981 1984. Paediatrica Indonesiana, [S. l.], v. 29, n. 1-2, p. 1–7, 1989. DOI: 10.14238/pi29.1-2.1989.1-7. Disponível em: https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/1438. Acesso em: 20 apr. 2025.