title: Free vaccines, insurance status influence immunization by physicians.
mesh_terms: D002648:Child; D006801:Humans; D007114:Immunization / Q000191:economics* / Q000706:statistics & numerical data*; D019458:Insurance Coverage / Q000191:economics*; D010820:Physicians; D014612:Vaccines / Q000191:economics*
chemical_list: D014612:Vaccines