Yes. Maybe I'll give a little bit of a comment and then Glenn or Carrie, you guys can jump in and see if anything. I'd say if you look at the chart that we went through, I think the chart -- I think it was Page 10 or so on the deck that implications for revenue profile, does a nice job of framing up between more urgent and more deferrable. And if you think of our neurosurgery business, our CSS business, which has instruments in it, obviously, capital, which includes the CUSA, the tissue ablation products, lighting and Mayfield, those clearly could be viewed as more deferrable. Now that being said, there are small capital purchase items, some of these are a $20,000, $30,000, some of these are a couple of hundred thousand.They're not a $2 million object. So we believe that there's obviously a level of deferability that's tied to how big the capital items are. But our assumptions are that those are going to be delayed through the majority of the year. If you think about dural access and CUSA disposables, these are the products that are used to do a craniotomy, to remove the tumor. They're the disposables used in the case. We're the market leader in all of those. And so those are on the shelf. So as we see those move through our sales, that gives us pretty good insights and confidence on the cases coming back. And to my -- the point that I made earlier, if you have a malignant tumor, you'll lean obviously more to more urgent, but some of those can even be delayed 30 days. If you have a benign tumor, someone could make a decision that it's not pressing on anything that would cause damage for 60 days, they may hold you off. And I think that's what we're seeing.CSF Management are managing the pressure you're bringing. There are different levels of it. A child that may have a hydrocephalus issue can be deemed very urgent as well as certain adult patients. So we see those cases taking place more and in many cases, don't need any type of ICU follow-up for the most part. So those are more enabled.And then things such as instruments, as an example, we show spanning a broader area. Why? Well, some of our more deferrables could be into individual doctor or dentist office. While some of the more urgent ones are instruments that are actually being used in potentially COVID patients or some of these urgent procedures. So that's kind of our view of it and the mix. But the key part for neurosurgery is you want to start a neuro procedure when you know you have a corresponding ICU bed to move the patient to. And we're now starting to see that open up, where that, for the most part of June -- excuse me, April was not available.