25857
While this has been helpful in guiding treatment with drugs that are currently available such as beta 2 - adrenoceptor agonists and corticosteroids , it takes little account of disease heterogeneity and causal pathways .
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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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