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As heparin remains one of the most frequently used medications today with potential for HIT with every heparin exposure , a close vigilance of platelet counts must be practiced whenever heparin is initiated .
 Chemical: heparin; Disease: HIT; Chemical: heparin; Chemical: heparin
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: heparin; Disease: HIT; Chemical: heparin; Chemical: heparin