I recently asked,
Doctor Emmanuelle D. Williams, M.D. of the Penn State Hershey Inflammatory Bowel Disease Center took time out of her busy schedule to answer this question. A little about Dr. Williams:

Emmanuelle Williams, MD is the Assistant Director for Clinical Medicine and Education, Hershey/Penn State IBD Center.
In regards to the question, Dr. Williams stated:
Thank you to Dr. Williams for her time and expertise!