4300
In this case report , we have described a patient with Crohn 's disease who developed subfulminant hepatitis B after the fourth infusion of infliximab due to an unrecognized HBs - antigen carrier state .
 subfulminant hepatitis B, infliximab
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:
 subfulminant hepatitis B, infliximab