Ian F. Smith - Chief Financial Officer and Executive Vice President
And Robyn, on types of transactions or collaborations that we're looking for, clearly, our focus right now is on what the VX-509 and VX 787, 787 being the molecule for, potentially, to help with flu. So we'll continue to have discussions. In particular, we've just recently received the 24-week data for VX-509, that allows us to continue those discussions. And as those progress through this year, we'll advise you appropriately.