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While most ESBLs have been found in " E. coli " , " K. pneumoniae " , and other Enterobacteriaceae , the OXA-type ESBLs have been found mainly in " P. aeruginosa " .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None