title: Symptoms, beliefs, and the use of physician services among the disadvantaged.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001294:Attitude to Health; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010548:Personal Health Services / Q000706:statistics & numerical data*; D012923:Social Class