Referrals
Here is the info. Your vet would need to refer you.
Then on the left side of the screen you can click on a tab that says "Small Animal Clinical" and then "Portosystemic Shunts" for some good reading material.
I don't want to make it sound like UC Davis would be a bad choice though. They just don't seem to be one of the leaders in this. I can only say that if my dog was diagnosed with a shunt, I would want her to go to the UT or Cornell because I think they are the best. Bile acids can be up for any problem involving liver function though, so it may not be a shunt at all.