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Alteplase was discontinued , and the patient was reinitiated on argatroban ; ultimately , he was transitioned to warfarin for long - term anticoagulation .
 Chemical: argatroban; Chemical: warfarin
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:
 Chemical: argatroban; Chemical: warfarin