You need to first start in animal models, and animal models are very helpful on the toxic effects of drugs on fetuses. That's one of the ways. The other way is for women who are now in clinical trials, one of the agreements, for example, is that they don't become pregnant, and if they do become pregnant, they need to understand the risks. So those processes are in place.
Particularly, let's go back to the Gardasil example and testing with young children. I think this is a much more complicated area because of the intimate ways in which evidence is done. Fortunately, there are some new tests that are on the market now, for example, for HPV that are just starting out that we could use with this age group without exposing them to intimate examinations.