Agarwal, Dr Saurabh, Renu Arora, and Sumit Upadhyay. 2020. “External Dacryocystorhinostomy for Patients of Chronic Dacryocystitis With Chronic Rhinosinusitis”. Tropical Journal of Ophthalmology and Otolaryngology 5 (3), 72-77. https://doi.org/10.17511/jooo.2020.i03.03.