ULLAH, F.; SHAH, M. A.; KHAN, M. N.; RAHIM, F.; BASHIR, M. Congenital Nasolacrimal Duct Obstruction at Agency headquarter Hospital Batkhela NWFP. Journal of Postgraduate Medical Institute, [S. l.], v. 18, n. 3, 2011. Disponível em: https://www.jpmi.org.pk/index.php/jpmi/article/view/921. Acesso em: 2 may. 2024.