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A wide range of busulfan exposures were targeted for children with the same disease ( eg , 39 target busulfan exposures for the 264 children diagnosed with acute myeloid leukemia ) .
 Chemical: busulfan; Chemical: busulfan
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: busulfan; Chemical: busulfan