5498
Warfarin - associated bleeding generally is considered deleterious ; however , in our patient it unmasked an early stage of colon cancer and thus may have saved the patient 's life .
 bleeding, Warfarin
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:
 bleeding, Warfarin