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METHODOLOGY : Serum levels of sFas ( soluble Fas ) were measured by ELISA in 24 patients with acute liver failure and 10 normal control subjects .
 Disease: acute liver failure
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: acute liver failure