Anticyclic Citrullinated Peptide Antibodies 3.1 and Anti-CCP-IgA Are Associated with Increasing Age in Individuals Without Rheumatoid Arthritis.

Berens HM, Polinski KJ, Mikuls TR, Khatter S, August J, Visser A, Mahler M, Weisman MH, O'Dell JR, Keating RM, Buckner JH, Gregersen PK, Norris JM, Holers VM, Deane KD, Demoruelle MK