title: Trend note: HMO enrollment tumbles in 2001.
authors: AllanBaumgarten.com
authors: Allan
authors: A
authors: Baumgarten
mesh_terms: D019538:Health Care Surveys; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data* / Q000639:trends; D006301:Health Services Needs and Demand / Q000706:statistics & numerical data / Q000639:trends*; D006801:Humans; D014481:United States