Kim, it's Brian. I mean overall and I think we're extremely encouraged and we had -- as you can imagine, we had a very, very slow January and first half of February, right, because everybody in the new shipment side as well was anticipating moving to the new Pod. Since the launch, I think it's fair to say that’s exceeded our initial expectations, April was up 50% referrals and shipments year-over-year. I think when we look at the volume that we processed in April, I think it's fair to say that it's the largest first month of a quarter that we’ve had as a business. So I think we are all very, very encouraged by the level that we seen, but as Duane is pointing out, I mean a lot of these kind of component issues and all, in all honesty, it happens normal course, it's happened throughout the course for the last few years. It's just that as we have inventory on hand, and as we have got the production kind of ramped and run, a lot of it just happens kind of behind the scenes and seamless; in this case here given that it was right at the start of this conversion, we just wanted to make sure, I would say be doubly cautious that we’re taking the right approach to make sure we had enough inventory and we’re going to be able to once we convert the people over. As we have talked about, we never want to be able to go back. So I think that feels very jazzed up about what we are seeing so far. Duane gave you a couple of different stories. We are getting tons of these different examples back about practices, letting us come in, I mean again if you think about a launch that’s effectively only 60 days old to have over 10% of our shipments coming from doctors who did not prescribe the product in 2012, in that shorter period of time, to me is pretty telling, it means doctors have taken these visit, they are looking at the products, they are excited about it, and they putting a few people on, and we think that trend is going to continue. So that gives us a lot of confidence as you look at that revenue range throughout 2013.