Additional file 2: Table S2. of Systematic review and meta-analysis of the sero-epidemiological association between Epstein-Barr virus and rheumatoid arthritis

Characteristics of 22 included studies. aDemographics of 57 RA patients and 16 other arthritides not stated, total population provided. bDetails not reported. cELISA (EA, VCA), immunofluorescence (EBNA-1). dImmunoblotting used for EBNA-2a, 2b and -1, immunofluorescence used for VCA and EA. (XLSX 13 kb)