Detroit sponsors group buying effort.
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D017754:Group Purchasing / Q000191:economics* / Q000458:organization & administration; D006264:Health Benefit Plans, Employee / Q000458:organization & administration*; D006265:Health Care Coalitions / Q000458:organization & administration*; D017048:Health Care Costs; D006801:Humans; D007750:Labor Unions; D008824:Michigan; D008923:Missouri; D017008:Negotiating