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The US Food and Drug Administration ' s ( FDA ' s ) need to use its regulatory flexibility , on behalf of patients , to avoid shortages of medically necessary drugs may further strengthen the incentive to " push the envelope " on quality .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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