title: Rand Health Insurance study.
authors.forename: J W
authors.initials: JW
authors.lastname: Hay
authors.forename: R
authors.initials: R
authors.lastname: Ricardo-Campbell
mesh_terms: D006279:Health Maintenance Organizations / Q000706:statistics & numerical data*; D006801:Humans; D007348:Insurance, Health / Q000706:statistics & numerical data*; D007902:Length of Stay; D014481:United States