993
OBJECTIVES : To determine the incidence of major hemorrhage and stroke in people aged 76 and older with atrial fibrillation on adjusted - dose warfarin who had been recently been admitted to hospital .
 Disease: hemorrhage; Disease: stroke; Disease: atrial fibrillation; 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:
 Disease: hemorrhage; Disease: stroke; Disease: atrial fibrillation; Chemical: warfarin