Treatment of severe periodontitis may improve clinical disease activity in otherwise treatment-refractory rheumatoid arthritis patients. (10th July 2019) - Möller, Burkhard; Bender, Philip; Eick, Sigrun; Kuchen, Stefan; Maldonado, Alejandra; Potempa, Jan; Reichenbach, Stephan; Sculean, Anton; Schwenzer, Anja; Villiger, Peter M; Wong, Alicia; Midwood, Kim S