Maybe because there is no such thing. No one waits till 8.5 months pregnant and suddenly decides to have an abortion!  Why on earth would they if they could do it at 3 months easily? At nearly nine months, either the baby is taken (born--alive) thru caesarian, or there is something very wrong --such as the fetus has died in the womb or the mother has eclepsia and her life is in danger. You do care about the mother's life, right?