I. Indirect abortion occurs when a procedure to save the woman's life results in the fetus's death, whereas direct abortion is when a procedure is performed with the intent of killing the fetus to save the woman's life.
II. Mary Ann Warren argues that personhood begins after birth based on criteria like an individual's ability to regard itself as a distinct entity. She claims that killing a disabled newborn is not morally equivalent to killing a person and may not be wrong.
III. Warren's arguments place personhood after birth but raise questions about whether choice should be the sole consideration in the abortion debate.