title: Regional group loyalties endure despite lure of national deals.
mesh_terms: D003284:Contract Services / Q000458:organization & administration; D017046:Cost Savings; D004865:Equipment and Supplies, Hospital / Q000600:supply & distribution; D017754:Group Purchasing / Q000191:economics / Q000458:organization & administration*; D006786:Hospitals, Urban / Q000458:organization & administration*; D007373:Interinstitutional Relations; D017008:Negotiating; D009519:New York City; D011682:Purchasing, Hospital / Q000191:economics / Q000458:organization & administration*; D014481:United States