Sharma B. Non endoscopic endonasal dacryocystorhinostomy versus external dacryocystorhinostomy. Kathmandu Univ. Med. J. [Internet]. 2009 Apr. 13 [cited 2024 Dec. 12];6(4):437-42. Available from: https://nepjol.info/index.php/KUMJ/article/view/1731