2003
Higher optical density of an antigen assay predicts thrombosis in patients with heparin - induced thrombocytopenia .
 Disease: thrombosis; Chemical: heparin; Disease: thrombocytopenia
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: thrombosis, heparin, thrombocytopenia 
Answer:
 Disease: thrombosis; Chemical: heparin; Disease: thrombocytopenia