title: Mutual fund, charge card companies could emerge as competitors to HMOs.
authors.forename: S
authors.initials: S
authors.lastname: Campbell
mesh_terms: D003132:Commerce / Q000639:trends*; D004465:Economic Competition; D019981:Health Care Sector / Q000639:trends*; D006279:Health Maintenance Organizations / Q000191:economics*; D007449:Investments; D010415:Pensions; D014481:United States