2046
BACKGROUND : Unfractionated heparin sodium ( UFH ) or low - molecular weight heparin ( LMWH ) is used in anticoagulant protocols at several institutions to prevent thrombosis after liver transplantation .
 Chemical: Unfractionated heparin sodium; Chemical: UFH; Chemical: low - molecular weight heparin; Disease: thrombosis
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: Unfractionated heparin sodium; Chemical: UFH; Chemical: low - molecular weight heparin; Disease: thrombosis