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In 25 out of 32 episodes ( 78 % ) , plasma ammonium levels and mental status returned to normal within 2 days after adequate management .
 Chemical: ammonium
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: ammonium