Sharma, G., Chaudhary, K. P., & Sawaraj, S. (2021). A comparative study of azelastine, cromolyn and olopatadine ophthalmic solution in vernal keratoconjunctivitis in a tertiary care hospital-open label parallel group study design. International Journal of Basic & Clinical Pharmacology, 10(7), 785–788. https://doi.org/10.18203/2319-2003.ijbcp20212373