I don't know if this is new news to anyone, or if it could help, just thought I would post it. I get this newsletter from Dr. Brandon Wuerth, he has crohns and I think his newsletter is very good.
http://www.ibdwatch.com/compli...anal-fistula-crohns/
http://www.ibdwatch.com/compli...anal-fistula-crohns/