2458
A 71-year - old man with paroxysmal atrial fibrillation who had a previous anterior myocardial infarction exhibited granulocytopenia 8 days following the administration of oral sustained - release procainamide ( 750 mg / day ) .
 granulocytopenia, procainamide
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:
 granulocytopenia, procainamide