2464
Is clopidogrel superior to aspirin in secondary prevention of vascular disease ? The cornerstone in clinical evidence of the relative efficacy of thienopyridines ( clopidogrel , ticlopidine ) versus aspirin in the secondary prevention of vascular disease is the Clopidogrel versus Aspirin in Patients at Risk of Ischaemic Events trial .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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