29040
Comparative effectiveness of dabigatran , rivaroxaban , apixaban and warfarin in the management of patients with non - valvular atrial fibrillation .
 Chemical: dabigatran; Chemical: rivaroxaban; Chemical: apixaban; Chemical: warfarin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: dabigatran; Chemical: rivaroxaban; Chemical: apixaban; Chemical: warfarin