"Which clinic in the U.S. is rated as #1 in the treatment"Judging from the pathetic level of treatments available, I'm not sure it really makes a difference who is "rated at #1." It might make a difference if you were misdiagnosed or something, but if you really have IBS, what are they gonna say that any other clinic wouldn't? Maybe they include a free fiber sample when they give the standard "try increasing your fiber" line.