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CONCLUSION : Zidovudine is well a known cause of anaemia and thus should be used with caution in the initiation of antiretroviral therapy .
 anaemia, Zidovudine
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:
 anaemia, Zidovudine