Douglas A. Drossman, MD: Well there's no problem with passing gas. I recall about ten years ago, I was on a radio show and someone said what is the problem about gas? And I said there is no problem. Gas is a part of life. And there were tons of phone calls in there because they thought that was so humorous, but actually passing gas is normal. There's a normal amount that people do, uh, it's more sometimes people's anxieties around it that creates the problem. Many times I'll have people coming who are concerned about where the problem may be just a more fundamental sense of embarrassment about their GI condition and we work on that.