8440
Ulcer became worse after tobramycin and gentamycin treatment for 2 days .
 Ulcer became worse, gentamycin; Ulcer became worse, tobramycin
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:
 Ulcer became worse, gentamycin; Ulcer became worse, tobramycin