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The treatment of HIT mandates an immediate cessation of all heparin exposure and the institution of an antithrombotic therapy , most commonly using a direct thrombin inhibitor .
 Disease: HIT; Chemical: heparin; Chemical: direct thrombin inhibitor
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: HIT; Chemical: heparin; Chemical: direct thrombin inhibitor