Petrushanko, T.A., Moshel, T.N., Hancho, O.V., Popovich, I.Y., Bubliy, T.D. and Bobrova, N.A. 2018. Effectiveness of NBF Gingival Gel use for treatment of patients with chronic catarrhal gingivitis. Zaporozhye Medical Journal. 2 (Mar. 2018). DOI:https://doi.org/10.14739/2310-1210.2018.02.125174.