Induced Apoptosis of Chondrocytes by Porphyromonas gingivalis as a Possible Pathway for Cartilage Loss in Rheumatoid Arthritis. - Röhner, E.; Detert, J.; Kolar, P.; Hocke, A.; N'Guessan, P.; Matziolis, G.; Kanitz, V.; Bernimoulin, J. P.; Kielbassa, A.; Burmester, G. R.; Buttgereit, F.; Pischon, N. (Calcified Tissue International, 2010)