There are always exceptional views for whatever issue it is. We saw that through SARS. There were experts out there who had very contrary views to my own in terms of SARS and in terms of the H1. I go with not the one out of 10, I go with the nine out of 10.
We've reviewed this and the point is that you make decisions. If you wait for the 100% answer you can wait forever. The point is whether we have sufficient information to make a decision based on what we have. And our view is that was sufficient information.
The Gates Foundation does not feel they need to revisit. We do not feel we need to revisit.