Figure 1.
Prevalence of Rheumatoid Arthritis from 2001 to 2011 by age groups: (a) 10–19 years old; (b) 20–29 years old; (c) 30–39 years old; (d) 40–49 years old; (e) 50–59 years old; (f) 60–69 years old; and (g) 70–79 years old.
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