So, for the Phase 2, and dialysis patients, sort of two points. One is, we’re obviously picking the dosage. And to some degree, it’s a little bit of proof of concept to show that our product, which is a pro-hormone still will work in the patients with very little of any kidney function. So, that will serve two functions. One, assuming successful, we’ll roll into a Phase 2, the second part of our cohort of our Phase 2, but it will also help us drive sales of our existing stage 3 and 4 chronic kidney disease are the current reality that’s on market because there remain skepticism that our salesmen have to overcome in the field like why would it work any different than nutritional vitamin D if you no kidney function, because it’s a pro hormone. Now, we -- based upon our study for RAYALDEE in stage 3 and 4, we have a high level of confidence because of the exact same dosage levels for stage 3 and 4. In other words, stage 4 having a higher -- less kidney function than a 3, we got the exact same results. And with the lower PTH, at the same levels and safely increase levels of vitamin D. So, that will be a useful tool for our existing sales team on stage 3 and 4. But more importantly, that will allow us to roll into the stage, second cohort stage 2 and then probably a subsequent Phase 3. Now, we power that or design that second cohort to we believe be able to allow to argue with FDA that will count as one of our Phase 3s. Maybe we could -- depending on the quality of the data, maybe that will even suffice. If not, we would have an additional Phase 3 to get it on label, and we would expect that to be a six-month trial, not too dissimilar from what we did for RAYALDEE itself. Now, the head to head is really a large part driven by our European partner, Vifor, for pricing. So, to achieve premium pricing over the existing therapeutics, you need to show that you’re superior drug. So, that’s the purpose of that trial. So, so assuming that that is accessible in the head to head, then it will us to tell Vifor to ask for a premium pricing in the European market.