Ullah, F., Shah, M. A., Khan, M. N., Rahim, F. and Bashir, M. (2011) “Congenital Nasolacrimal Duct Obstruction at Agency headquarter Hospital Batkhela NWFP”, Journal of Postgraduate Medical Institute, 18(3). Available at: https://www.jpmi.org.pk/index.php/jpmi/article/view/921 (Accessed: 2 May 2024).