8557
In higher tiers of the BRAFO framework , risks and benefits are integrated quantitatively to estimate net health impact measured in DALYs or QALYs ( disability - or quality - adjusted life years ) .
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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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