Thanks, Patrick. And as you said, obviously Roland can chime in. So first of all talking Q1, I think Roland and I, both alluded to the rationale behind our guidance for Q1. First of all, obviously, we very proactively look and consider and recognize our economic and financial environment. That's number, one. Second, as you know, there is a significant base effect Q1 2023 compared to Q1 2022, where by the way in Q1 2022, COVID testing was still extremely strong. Second -- and third, I'm sorry we highlighted two elements. First of all, we take a prudent look at the Chinese market for many reasons, because over the last three years we have constantly fueled some Chinese company with components for their own COVID testing. This is disappearing. It's particularly sales around enzymes and other components. And we know that the current market in China, is impacted by different factors. First, obviously, COVID recovery still affect in some regions of lockdown. So, it's better than I think for you and for us to take a prudent look. We still consider China as an important market, but we are cautious. Second, and nothing surprising, because we have kept saying that in the past, we see a more volatile OEM business in Q1. This is not a surprise. This is the nature of our OEM business, which has always had those volatile features. Over the rest of the year, we see as Roland highlighted, the constant acceleration of our business. First of all, because as you have seen last year, starting Q2, most of the bits quarter-after-quarter, were coming from non-COVID. So this is also obviously, going to help us in the rest of the quarter. The impact of COVID itself will decline. So the comp is going to be better. Second as we said, we have a clear vision of our pipeline of instruments. Therefore, we have also some vision on the potential recurring consumption on consumables under the instruments. Last but not least, do not forget what we have given as a number for Q4. More than 75% of the bit of Q4, is coming from the non-COVID portfolio. So this allows us as well, to believe that there will be this acceleration quarter after quarter. On the gross margin and the EBIT margin, I think Roland also alluded to that in the presentation today, we continue to believe that we have a pocket of efficiency especially around our investment around digital. Second as you know, part of our portfolio especially, in the five pillars is made of very new products, who have not -- that have not achieved the optimal ratio between cost of goods and volumes. We have seen QIAstat really improving well in 2022. We need to continue there. And so, this is why, we are also confident that we can improve those two dimensions, both on the gross margin and the EBIT margin. Roland, do you want to add something?