title: Exodus, not boycott. Simultaneous Medicare pullouts are just a coincidence, not collusion, HMOs say.
authors.forename: C
authors.initials: C
authors.lastname: Hallam
mesh_terms: D003284:Contract Services / Q000639:trends; D003659:Decision Making, Organizational; D006279:Health Maintenance Organizations / Q000191:economics* / Q000639:trends; D020398:Medicare Part C / Q000191:economics*; D020414:Risk Sharing, Financial / Q000639:trends*; D014481:United States