Are There Any Specific Studies to Look at the Sub-Populations?

It sounds like we need more dedicated studies that are specifically looking at some of these sub groups, rather than the whole heterogeneous population. Are there any specific plans to look at these things now that these gaps have been identified? I'm not aware of any specific plans. These are very difficult studies to do also, it's very difficult to answer the questions in the sub populations in single studies. If we were able to form a registry, we may, on a larger scale, be able to address and answer these questions. We sa community need to collaborate.