So, most -- in this interim look, we'll see safety, obviously, safety, tolerability, I think it's important to see the dose that we go to we titrating, from 150 to 250 parts per million, like to see 250 in as many patients as possible, with -- again, patients tolerating it for the full 12 weeks of the treatment. From an efficacy standpoint and the early data, I think we'll be we should get a decent look at quality of life, possibly physical function data, which are two critical endpoints, I think that bacterial load is going to take longer, I don't think we're going to see much, if any, on the interim look. As this type of data takes time. We sent it out to a lab, a central lab and work is done there. And that's something that will take a bit longer. And remember that we do follow these patients for 12 weeks after the 12-week treatment period, the 12 weeks of observation where we're still gathering data, especially on bacterial load. So, I think that safety, tolerability, as well as quality of life, and physical functions is what you should be looking for. And as for what do we need to see to be excited or happy about that improvement, improvement, quality of life, improvement in physical function. This is an open label study, single arm, and we are getting baseline numbers. So, these patients will act as their own controls. So, you'll be able to see the effect on these patients, whatever however many it is, if that interim look. I mean, we expect to see improvement. If we see a decline in physical function quality of life, that's bad, but we expect to see improvement and that will be a big positive for these patients.