chandra b c, S. , ramashesh, R. and G, M. 2023. A Study to Assess the Efficacy of Different Concentration of Nasal Douching on Symptoms and Mucociliary Clearance in Persistent Allergic Rhinitis. Bengal Journal of Otolaryngology and Head Neck Surgery. 30, 2 (Mar. 2023), 156-161. DOI:https://doi.org/10.47210/bjohns.2022.v30i2.680.