No.
We don't specifically measure fertility; we measure pregnancy outcomes and take a history by the veterans' partners. This is not squeaky clean reproductive epidemiology; it can't be done, because a number of these folks have had several partners. But whenever we see the patients biennially, we have their partner complete a form to characterize what the reproductive history has been.
What we go by is that we've had, I think, 60 births of children from our cohort post-deployment.