2048
The frequencies of HIT after liver transplantation and platelet factor 4 / heparin - reactive antibody ( HIT antibody ) positivity in liver transplantation patients , however , are unknown .
 Disease: HIT; Chemical: heparin; Disease: HIT
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: HIT; Chemical: heparin; Disease: HIT