2050
We started LMWH ( 25 IU / kg / h ) on postoperative day ( POD ) 1 , switching to UFH ( 5000 U / d ) on POD 2 or 3 .
 Chemical: UFH
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: UFH