Relationship Between Cyclic Citrullinated Peptide Antibodies Positivity and HLA-DRB1 Shared Epitope Alleles in Patients with Rheumatoid Arthritis in Turkey Journal title: Turkish Journal of Rheumatology Authors: İdris Dayan, Canan Tıkız, Fatma Taneli, Cevval Ulman, Gürol Ulutaş, Çiğdem Tüzün Subject(s):