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Efavirenz ( EFV ) is one of the most commonly prescribed antiretrovirals for use in the treatment of human immunodeficiency virus ( HIV ) infection .
 Chemical: Efavirenz; Chemical: EFV
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Efavirenz; Chemical: EFV