title: Improved criteria for selecting physicians for HMOs and PPOs.
authors.forename: E S
authors.initials: ES
authors.lastname: Lozada
mesh_terms: D002568:Certification; D006279:Health Maintenance Organizations / Q000592:standards*; D010820:Physicians / Q000592:standards*; D011243:Preferred Provider Organizations / Q000592:standards*; D014481:United States