9425
Paradoxical ventricular tachycardia and fibrillation after intravenous bretylium therapy .
 fibrillation, bretylium; Paradoxical ventricular tachycardia, bretylium
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:
 fibrillation, bretylium; Paradoxical ventricular tachycardia, bretylium