I'm sure. In reverse order, I think our total revenues that go to oncology from what we formerly called Radionics, maybe about $10 million. And if we sell three or four systems a year, at $300,000 to $400,000, that's a good year. Most of that business is software, repairing service, parts and equipment. I wish we had a business that was competitive with Varian or BrainLAB or one of the big players, but we really are servicing a historical customer base, what we acquired is part of the acquisition of the CUSA Ultrasonic Aspirator line. Now that doesn't mean we don't have a good product. We actually have an excellent product and particularly in price sensitive accounts, they will buy the XKnife. That being said, there is nothing about our business strategy that’s reliant on selling new capital in the radiation oncology area, and I think I have been consistent in saying that since we bought it. In terms of the margin structure of the new categories, let me start by saying as you look to our margins in the next few years, we actually expect a reasonable ramp in our gross margins, and Jack talked about next year in the 63% to 64.5% range, and we'll go into some more detail at the Investor Meeting in a week, about why we believe that it can grow into the high 60s, even in the longer run, into the 70s. We are a company that is increasingly in high margin orthopedic categories, that comes with a cost, and as we pointed earlier in the call, we have indeed increased the expectation for SG&A percentage by about a point to a point and a half, because of our presence in those markets. On the other hand, the gross margins for many of our orthopedic products can be in the 80% range. We're not going to break out gross margin by category, but I will remind people of what I've said in the past. The instrument gross margins have historically been in the 50s. We have some upside with the strengthening of the dollar versus the euro, although it will take six to nine months for that to turn. Neurosciences, we've generally said gross margins are roughly at the corporate gross margin. Clearly, orthopedic businesses have margins in excess of the average corporate gross margin. I think we don’t want to give out either competitive information or getting a habit of reporting that information. I think that gives you plenty of room to understand, roughly the structure, and again, I am repeating myself, one of the advantages of the medical instruments business, only growing at the 5 to 8% range, is that our lowest gross margin business is our slowest growing business, so just the mix, as we go forward, will improve our gross margins.