Vozna, I. V., Samoilenko, A. V. ., Pavlov, S. V. ., & Kokar , O. O. . (2021). Evaluation of the bone tissue metabolism in patients with generalized periodontitis of various degrees exposed to work-related harmful factors by the oral fluid Klotho protein content. Zaporozhye мedical Journal, 23(2), 274–279. https://doi.org/10.14739/2310-1210.2021.2.228787