What went wrong with HMOs in 1997?
D002204:Capitation Fee; D005376:Financial Management / Q000706:statistics & numerical data / Q000639:trends*; D006279:Health Maintenance Organizations / Q000191:economics* / Q000706:statistics & numerical data / Q000639:trends; D007182:Income / Q000706:statistics & numerical data / Q000639:trends*; D014481:United States