%0 Journal Article %T Serum YKL-40 levels and disease characteristics in patients with rheumatoid arthritis %J Archive of "Caspian Journal of Internal Medicine". %D 2019 %R 10.22088/cjim.10.1.92 %X The present study aimed to evaluate serum YKL-40 levels in patients with rheumatoid arthritis (RA) compared to healthy subjects and to search whether there is an association between YKL-40 levels and disease characteristics in RA %K Rheumatoid arthritis %K YKL-40 %K Disease activity %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6386321/