If I have a second I'll add to that by saying that if you do a cross-sectional study, almost like an economic modelling, of how families function with and without grandparents, the years when they came, the size of the family unit, and so on, we'll get to have a good understanding, especially if we have children who have to go to a day care or who require after-school assistance, etc. I think we can do that as a cross-sectional study.
On October 6th, 2016. See this statement in context.