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We describe a case of interstitial hypoxaemiant pneumonitis probably related to flecainide in a patient with the LEOPARD syndrome , a rare congenital disorder .
 interstitial hypoxaemiant pneumonitis, flecainide
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:
 interstitial hypoxaemiant pneumonitis, flecainide