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Further suggesting lack of exaggerated adrenergic response , 13 ( 65 % ) of 20 patients required supplemental atropine to reach their target heart rates .
 Chemical: atropine
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: atropine