N.J. Khushvakova, F.A. Nurmukhammedov and U.F.Davronov 2019. Optimization of treatment methods for chronic diseases of the nose and paranasal sinuses combined with chronic dacryocystitis. Proceedings of The ICECRS. 3, (Dec. 2019). DOI:https://doi.org/10.21070/icecrs.v3i0.288.