K. A. Hossain, M. A. Rashid, A. R. Islam, and M. A. Hossain, “Hydrostatic Message is an Effective Measure in Canalization of Congenital Naso- Lacrimal Duct Obstruction”, Faridpur Med Coll J, vol. 10, no. 2, pp. 50–51, Nov. 2016.