Bolyarova-Konova, T., L. Stefanov, Z. Kolarov, D. Tanev, and P. Yankova. “ACPA IN SALIVA AND THEIR ASSOCIATION WITH PERIODONTITIS AND RHEUMATOID ARTHRITIS”. Rheumatology (Bulgaria), Vol. 28, no. 1, June 2020, pp. 20-30, doi:10.35465/28.1.2020.pp20-30.