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The purpose of this article is to present the first case - series of posterior reversible encephalopathy syndrome ( PRES ) associated with L - asparaginase treatment .
 posterior reversible encephalopathy syndrome, L - asparaginase; PRES, L - asparaginase
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 posterior reversible encephalopathy syndrome, L - asparaginase; PRES, L - asparaginase