Figure 1.

Responders(%) to 23F, 6B and both pneumococcal serotypes in methotrexate treated RA patients according to smoking status. Responders i.e. patients with positive immune response defined as post-vaccination antibody levels ≥2 times pre-vaccination antibody levels. Ever smoked i.e. previous/current smokers

Roseman et al. Arthritis Research & Therapy 2012 14:R170   doi:10.1186/ar3923
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