I work with Dr. Wangen at the IBS Treatment Center. So perhaps I am a little biased, but I can tell you that my wife and a number of our friends have benefited from treatment at the IBS Treatment Center. If you look at the testimonials you will see some of the nice notes that past patients have sent us. Two patients have volunteered to communicate directly with prospective patients. Just email email@example.com to ask for the contact info.