Thanks, Christophe. Hi, Ken, thanks for the question. Yes, indeed we continue to consider and continue to keep an eye on the share price we do believe that the share price is undervalued. It's not truly reflecting the true fundamentals of the business, especially what we've done and how we've been able to deliver since the acquisition on the financial deliverables. But at the same time, our capital allocation policy, we still not shifting away from that, one, being the fact that we are focusing heavily on the growth drivers, the investment in R&D, whether it's both in-house or external. Some of these external partnerships will continue doing on early-stage assets as well. We continue to invest in China for 15 new product launches for the next five years. These are going to help us grow the top-line. And PDT, we continue to invest in PDT. And as you can see, we're really improving the overall business in PDT. We're improving our margins in PDT. And this will -- this is something that we continue to focus on. Deleveraging, it's one of our key focus to rapidly deleverage. We have however changed the wording. We've made it a bit clearer that our net debt to adjusted EBITDA ratio in our capital allocation policy, we had reached 2 times, but now we've made it clear to say reach low 2s, because we wanted to clarify that, many, we used to get a lot of questions around. Does it have to be 2.0 times, or can it be 2.1, 2.2, 2.3 times? And we want to allow ourselves a bit more flexibility here in the event of here we need -- that we may want to consider potentially a share buyback or future incremental in-house, sorry, partnership R&D acquisitions. So in a nutshell, yes, we are continuing to look at our share price. We think it's undervalued but 2021 is our inflection year for R&D. And we think the fundamentals will prevail.