Richard F. Pops - Alkermes Plc
Analyst
Good morning, Dave. So, the metabolic study for 3831, we are going to have a webinar, a webcast, for you all. As I said in the earlier remarks, we're finishing those up, presentations, now, and we'll put out a notice about that webcast in the next few weeks, I would think. And meanwhile, we're preparing manuscripts for publication based on the metabolic work that we've been doing pre-clinically and ultimately clinically as well. So, that's a very rich area of science for us right now and we're quite excited to share that with you all. Just to be clear on the 8700, there is no Phase III efficacy study because of the 505(b)(2) filing strategy that we're employing. That's why the data we presented this week actually was so important because these are actually real efficacy results using MRI, looking at disease relapse rates and progression from the patients enrolled in the large open-label two-year safety study. So, it's true bona fide efficacy data, but we don't need it and there's not a Phase III study per se that we'll report out. So, from our perspective, the clinical requirements for submission of the NDA are complete and they comprised of a bridging study that looked at the PK exposures bridging back to TECFIDERA and then this two-year safety study, which we've completed the in-life phase sufficiently enough for the submission of the NDA. The subcu dosing on IL-2, the goal was for this to be over multiple days, if not weeks. So, we'll see. I don't want to guess yet, because we just need to look at the dose response in the human subjects and look at the tolerability as well. So, that's why we do the experiment, but in the animal work, it's quite encouraging.
David R. Risinger - Morgan Stanley & Co. LLC: Great. Thank you very much.