I think we need to be careful we don't overreach with pulse oximeters. They're just one measure, one tool to assess a person's status. For example, you've got to think of it like a thermometer. If I take someone's temperature and they're a normal temperature, if they look sick, they're sick. I don't care what their thermometer is saying. So you've got to weigh up a whole lot of other things, not just the oxygen sats or the pulse that the pulse oximeter is telling you.