Well, I think the first thing to note is that it's not so much that Canada is a second choice; it's that under the current patent system you file in one place, and then you have 12 months to file either internationally or pick your other countries. The U.S. just offers that added advantage with the provisional applications. It's quicker, it's less formal. It can be less expensive, but not necessarily. So when I say that Canada is our second filing, it's not so much that it's a second choice. We will file in Canada when it makes sense to file in Canada--for example, do we have commercial partners who have a market in Canada?
That being said, if Canada had a provisional system or another competitive system that made it advantageous to file in Canada first, we would be happy to do so. It's purely a matter of.... Oftentimes we have a publication coming up quickly, so it's where can we file that makes the most sense first.