Okay.
Well, I'll just say really quickly--then maybe I'll pass it to you--that we do follow the Canadian tuberculosis standards. They have evolved over time in terms of what's included and what's recommended based on the evidence. Richard Long is actually one of the editors of the last version of them. Some things that were done in the eighties are probably dropped off. We've taken up some new technologies and different ways of doing things.
So we try to keep up with the latest guidelines.