1. Adilova F.M. Hirudotherapy in the treatment of external otitis media // Vestn. otorinolar: Materials of the III Russian scientific-practical. conf. "Science and Practice in Otorhinolaryngology": Sat. tr. M., 2014 .-- P. 168.

2. Burmistrova T.V. Modern etiopathogenetic aspects of exudative otitis media // Ros. otorhinolar. 2014. - No. 1 (8). - S. 25 -28.

3. Dmitriev N.S. Mileshina N.A. Surgical treatment of patients with exudative otitis media // Vestn. otorhinolar. 2013. - No. 6. - P. 49 -51.

4. LebedevYu.A. Eventration and plastic of retraction pockets of the tympanic membrane in chronic secretory gray otitis media // Problems and possibilities of ear microsurgery / Materials of Russian scientific-practical. conf. otorhinolar. Orenburg, 2012 .-- P.76 - 79.

5. Mion O. de Mello J.F., Lessa M.M. et al. TheRoleofRhinitisinchronicotitismedia // Otolaryngol. HeadWeekSurg., 2013. 128. - 1. - p. 27 -31.

6. Yuki H., Fischman W. H. Purification and characterization of leech hyaluronic acid endo b-glucurinidase // J. Biol. Chem. - 2003. - Vol. 238. -P. 1877- 1879.

7. Zwislocki J. Normal function of the middle ear and its measurement // Aydiology. 2008. - Vol. 21. - P. 4 - 14.