Assertion: endarterectomy | /r/HasProperty | range
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text: The experience of surgeons had to meet the criteria of the American Heart Association with respect to acceptable rates of complications during and after carotid endarterectomy, and the experience of interventional physicians had to be equal to or superior to the published results of carotid stenting (i.e., an incidence of periprocedural stroke or death of less than 6 percent).10,11 Surgical investigators had a median annual volume of 30 endarterectomies (range, 15 to 100).