Minneapolis HMO's lower premiums trigger hospital, physician changes.
D003256:Community Participation / Q000191:economics*; D005249:Fees and Charges; D006279:Health Maintenance Organizations / Q000191:economics*; D006761:Hospitals / Q000706:statistics & numerical data; D008910:Minnesota; D010548:Personal Health Services / Q000706:statistics & numerical data; D010820:Physicians