So for the infertile lady, what we do is there are ... You have to realize that these patients are not ovulating all the time, right? You are supposed to ovulate once a month, you know, eggs come out, and it's like the body is trying to get pregnant every month. But people with polycystic ovarian syndrome they're not ovulating all the time. So, that's the problem. That's where the infertile lady come in. However, you have to realize they do ovulate every once in a while, so they do need actually protection with birth control if they do not want to get pregnant. However, if they're trying and not getting pregnant, then yes, there are some ovulation induction agents we can use to help them get pregnant.