title: Health insurance and out-of-pocket expenses.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Aslam H
authors.initials: AH
authors.lastname: Anis
mesh_terms: D001172:Arthritis, Rheumatoid / Q000191:economics* / Q000453:epidemiology*; D017281:Cost of Illness; D005102:Health Expenditures / Q000706:statistics & numerical data*; D006801:Humans; D007348:Insurance, Health / Q000706:statistics & numerical data*; D020379:Risk Adjustment / Q000191:economics / Q000706:statistics & numerical data*