Sharma G, Chaudhary KP, Sawaraj S. A comparative study of azelastine, cromolyn and olopatadine ophthalmic solution in vernal keratoconjunctivitis in a tertiary care hospital-open label parallel group study design. Int J Basic Clin Pharmacol [Internet]. 2021 Jun. 22 [cited 2024 Apr. 28];10(7):785-8. Available from: https://www.ijbcp.com/index.php/ijbcp/article/view/4697