If harmful, they would pay the ultimate price themselves, like those East German women or death (Griffith Joyner?).
If not? What is the big deal? As stem advances, we are always going to utilize it to fullest advantage on sports, from pills, injections, medical procedures, to equipments....
Wang junxia seems ok, so do phellpss, bolt, or even amsrong.
Let them do it, just throw away this IOC fantasy, clean sports?! Give us a break. It is just a game for bragging rights and adrenalines, if it help men to vent extra violent energies, turn attention from wars to just how many gold medals, that would be the biggest contributions of olympics