HIRUDOTHERAPY IN TREATMENT OF CHRONIC GENERALISED PERIODONTITIS ArticleSashkina 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. Том 8. 2019. С. 79-82