534
Subsequent treatments included alternative anticoagulants ( 11 patients ) , thrombolytic drugs ( 3 patients ) , inferior vena cava filters ( 3 patients ) and , eventually , warfarin ( 11 patients ) .
 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: warfarin