title: Disenrollment of Medicare beneficiaries from HMOs.
authors.forename: G F
authors.initials: GF
authors.lastname: Riley
authors.forename: M J
authors.initials: MJ
authors.lastname: Ingber
authors.forename: C G
authors.initials: CG
authors.lastname: Tudor
mesh_terms: D000328:Adult; D000368:Aged; D003258:Consumer Behavior / Q000706:statistics & numerical data*; D005260:Female; D006279:Health Maintenance Organizations / Q000592:standards / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D006278:Medicare / Q000592:standards / Q000706:statistics & numerical data*; D008875:Middle Aged; D010361:Patients / Q000145:classification; D014481:United States