We're certainly not trying to answer everything with this one study--we hope it will be an important piece, but it's going to take a number of studies, a number

We're certainly not trying to answer everything with this one study--we hope it will be an important piece, but it's going to take a number of studies, a number of different approaches to know if BI really could or could not work. We hope us taking a first step will help push others in the US to do more of the research we need.