Erratum to: Concentration of antibodies against Porphyromonas gingivalisis increased before the onset of symptoms of rheumatoid arthritis

Unfortunately, after publication of this article [1], it was noticed that the x-axis markers for Fig. 2a and b were incorrect. The corrected figure can be seen below. https://static-content.springer.com/image/art%3A10.1186%2Fs13075-016-1164-1/MediaObjects/13075_2016_1164_Fig1_HTML.gif Fig. 2 Antibody responses during the pre-dating time until the time point for onset of symptoms of RA, from pre-symptomatic individuals who donated multiple blood samples pre-dating the onset of symptoms of RA (n = 422) and from patients with RA (n = 192). Logarithmic mean concentrations during 2-year periods of... Mehr ...