Douglas A. Drossman, MD: Many of these are not under careful scientific scrutiny, but patients do benefit from them. So I don't object if a patient were to use one of these complementary types of treatments, as long as it doesn't interfere with the medical treatments that I might be involved in. And I also want to emphasize sometimes it's not what you do with the treatment, but how you do it. I think the reason why many of these treatments might work is that the practitioner engages with the person, shows that they really care, and wants to help the patient. The patient believes it's going to helpful and they truly benefit.