Bolyarova-Konova, T.; Stefanov, L.; Kolarov, Z.; Grozdanova, R.; Nikolova, M. Anti-Cyclic Citrullinated Peptide Antibody and Rheumatoid Factor and the Relationship Between Periodontitis and Rheumatoid Arthritis. C. R. Acad. Bulg. Sci. 2022, 75, 451-457.