I'll take them in reversal. Yes, we do have case mix indices and our CMI traditionally has been in the 1.26, 1.28, occasionally get up to 1.3. And as we look to the volume building strategies, we're going to continue to drive the higher acuity, stroke, spinal cord, hip replacement types of patients into our hospitals, again, because we think we've got the services and the capabilities to provide a superior level of care. I wouldn't use that, Frank, as a measure, though, of the, strong corollary to our ability to overcome the pricing rollback. We think, that the CMI is going to stay in that 1.28, 1.30 range. So it really kind of goes back to your first question, which is on the volume, and the volume was pretty consistent throughout the quarter. February was a very strong month. We saw good results in March, and as I mentioned a minute ago, we're very, very pleased with what we're seeing coming into the beginning of the second quarter. So, you know, I don't want to get too far out ahead of ourselves here, but we are very pleased with our volume building initiatives. As we said consistently, that was going to be a real important measure of our success, not only in 2008 and beyond, but it's certainly what we've seen has allowed us to not only reaffirm guidance, but I think it's very important to emphasize that as you look at the EBITDA range that we provided, and the EPS range that we provided, we're directing everybody to be looking at the higher end of those ranges, and we would not be, we wouldn't be directing you there unless we he felt pretty good about the volume opportunities that are there for the balance of the year.
Frank Morgan - Jefferies & Co: Okay, thanks.