Pokharel, S. M.; Chaudhary, S.; Chaurasiya, B. Factors Affecting the Success Rate of External Dacryocystorhinostomy at B. P. Koirala Institute of Health Sciences, Dharan, Nepal. Birat J. Health Sci. 2017, 2 (2), 196-200. https://doi.org/10.3126/bjhs.v2i2.18526.