Healthcare buyers clubs.
When one shops for a computer or auto insurance, the AHA or the AMA probably isn't the first thing that comes to mind, but associations are getting into the business of product endorsements.
Kirchheimer
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D000573:American Hospital Association / Q000191:economics*; D000574:American Medical Association / Q000191:economics*; D016520:Entrepreneurship; D005376:Financial Management / Q000331:legislation & jurisprudence / Q000379:methods*; D016365:Liability, Legal; D011357:Product Line Management / Q000191:economics*; D014481:United States