RT Journal Article SR Electronic T1 CC-chemokine ligand 18 is a useful biomarker associated with disease activity in IgG4-related disease JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 1386 OP 1387 DO 10.1136/annrheumdis-2017-212110 VO 77 IS 9 A1 Akiyama, Mitsuhiro A1 Yasuoka, Hidekata A1 Yoshimoto, Keiko A1 Takeuchi, Tsutomu YR 2018 UL http://ard.bmj.com/content/77/9/1386.abstract AB