If I could add to Marcus's comment, on the second question around the health impacts, while a more complex strategy is required in order to really measure that effectively, you can ask people about it in a cross-sectional study, in the kind of study we're doing. Although it's not as strong a measure, it's also helpful to get that kind of information just by asking people hypothetically about what some of the effects are of being able to stay at home longer.
On December 4th, 2007. See this statement in context.