Lyanne, it's a good question. And like David's, it's complex, because there's 140 countries all adopting digital health at different rates, and all having different sort of national rules around retail and restaurants as well as how you get back to life and back to health care as well. Healthcare has proved pretty resilient, I think, because people know, it's an essential industry. And the data that I shared earlier around truly life and death decision of using your CPAP or not for treating sleep apnea. I mean, it's incredible to have those data in the hands of our physicians worldwide as they are driving adherence. It's one thing to be doing a digital telemedicine call with a patient over a zoom or secure network, it's another one to say, listen, using this device will save your life, as well as improve your quality of life. And so the numbers of plus or minus 10% anyway, and that's why the ranges are so broad. But look, here the US key market is somewhere between 70 to 90% of pre-COVID patient flow as best we can measure it by at the link air usage by essence 10 sort of air solutions, activations of new devices and reactivations of resupply devices. And it's not perfect data. And it's different in all the 50 states just in the country that I'm living in here, between California, Massachusetts, and Florida, very different areas of opening up of their whole economies on local and state regulation. But that range is pretty broad, but it's pretty accurate in terms of the patient flow through. And that's why I think you've seen people really participating in masks and accessory resupply programs, but a slowdown, obviously a new patient starts. And as you pointed out the kinetics of it. Yes, true from the September quarter, I think we moved up sort of somewhere between 5% and 10% in each of the key markets, I talked about US, China and Germany as examples for Americas, Europe and Asia. So that's 5%, 10% 500 basis points, plus improvement in the quarter it's not this V shape, we're back to 100%, December 2019. Again, but it's a slow, steady sort of U-shaped improvement in the flow of patients, which we think does then over time flow through with all the systems and all the restrictions and portfolio of 140 countries through to patients getting set up and started on a lifetime of therapy on sleep apnea or COPD therapy.