title: Military call-up costly to CHAMPUS HMO.
authors: P J
authors: PJ
authors: Kenkel
mesh_terms: D006264:Health Benefit Plans, Employee / Q000191:economics*; D006279:Health Maintenance Organizations / Q000191:economics*; D006772:Hospitals, Military; D008877:Middle East; D014481:United States; D000078329:Workforce