RT Journal Article SR Electronic T1 Correspondence to ‘Bacterial citrullinated epitopes generated by Porphyromonas gingivalis infection—a missing link for ACPA production’ JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP annrheumdis-2020-219255 DO 10.1136/annrheumdis-2020-219255 A1 Ma, Kevin Sheng-Kai A1 Chiang, Cho-Han A1 Chen, Yi-Wen A1 Wang, Li-Tzu YR 2021 UL http://ard.bmj.com/content/early/2021/01/11/annrheumdis-2020-219255.abstract AB