Electra, Hi
Here's his website and he is a vet, has been for 27 years. He's working on a book
http://dogtorj.tripod.com/index.html
Look for the article titled "Food Intolerance in Animals and Man" Left side bar home page. The article is lengthy, as it is the text of a lecture from a conference and unedited, maybe 24 pages. but get through it, it's worth it.
Leslie