sentences:  During this time of uncertainty, many cardiologists started extending the dual antiplatelet regimen of aspirin and clopidogrel in these individuals, as some data suggested that it may prevent late thrombosis.The FDA held an expert panel in December 2006 to go over the data presented by Cordis and Boston Scientific to determine if drug eluting stents should be considered less safe than bare metal stents.It became evident at the meeting that with all the data published there were varied definitions of late thrombosis and key differences in the types of lesions in different studies, hampering analysis of the data.