Thank you very much, Umer. I will recap my thoughts on M&A, and then Mikael can deal with the R&D question about Tafamidis. Look, as we have said consistently, and we started saying that from the second quarter last year and the third quarter last year, and now we are repeating in the fourth quarter earnings call. Business development is not a strategy. It is a way to execute your strategy. And our strategy has been very clear. Our strategy is to reach top-line growth through the introduction of breakthrough medicines, and we sounded, as I said in my comments, into innovating for growth. And we believe that right now we are very well positioned to achieve this strategy, because of the combination of, one, virtually LOE-free period after the Lyrica LOE until 2025, the mid of the decade, and also, the introduction of a great pipeline, what we think is the greatest pipeline ever. So with that in mind, when we have enough time to play, what we need to do is, is to make sure that we maximize the chances of achieving the potential for those new launches are expecting to bring. And this means that execution is extremely important. Right now, execution can make the difference. And large M&A, it's not that we'll not add right now matching our growth profile, but it could take - derail us from execution, because a large M&A requires thousands of people to work together to just integrate the two companies. That been said, first of all, we never say never, so we are examining all opportunities. And also, we do plan to deploy capital to enhance our growth profile. It's just that this time, the capital that we plan to deploy has a very different, slightly different direction and focus than before. Before, we were trying to do revenues now or soon. This was more or less the focus of our M&A dogma. And this is exactly what we needed at that time. We were dealing with lack of revenue growth and we needed to bring either pieces that could enhance the strategy to break the company at that time or we could bring revenue streams that will enhance the growth profile that was actually very bad at the time. Right now, the dogma is changing, and it is how can we bring assets to enhance even further our pipeline to make our growth sustained. And because we have a very strong R&D machine that right now I fully trust their ability to choose assets and also develop them. This is why our strategy is to deploy capital towards this direction. As I said though, we never say never, and of course, we will never lose our flexibility to deploy capital if we see the opportunities in the best way to achieve our premise. And with that, I will ask Mikael to comment.