Біда, В.І., Гурин, П.О. and В’юн, Г.І. 2016. Influence of risk factors on the long-term results of periodontitis treatment. ScienceRise: Medical Science. 6 (2) (Jun. 2016), 14–21. DOI:https://doi.org/10.15587/2519-4798.2016.72488.