2653
Native arterial thrombosis , though recognized as a severe complication of thrombin injection , has not been well described in the literature .
 arterial thrombosis, thrombin
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:
 arterial thrombosis, thrombin