HIRUDOTHERAPY IN TREATMENT OF CHRONIC GENERALISED PERIODONTITIS Article Sashkina T.I., Abdullaeva A.I., Runova G.S., Saldusova I.V., Zajchenko O.V., Faskhutdinov D.K., Sokolova S.I., Pustovaya E.P. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY. PIROGOV RUSSIAN NATL RESEARCH MEDICAL UNIV. Vol. 8. 2019. P. 79-82