title: Shake, rattle and disenroll. Membership erodes as HMOs exit markets, but profits begin to stabilize.
authors.forename: L
authors.initials: L
authors.lastname: Benko
mesh_terms: D000368:Aged; D002204:Capitation Fee; D003625:Data Collection; D006271:Health Facility Closure; D006279:Health Maintenance Organizations / Q000191:economics / Q000706:statistics & numerical data* / Q000639:trends; D006801:Humans; D020398:Medicare Part C; D014481:United States