Miracle Baby Developed Inside Mom But Outside Womb Montreal’s miracle baby, the boy who developed for more than nine months in his mother’s abdominal cavity, with the placenta attached to fatty tissue above her empty uterus, is capturing headlines the world over. But the doctor involved made an ominous prediction. Dr. Peter Mitchell, former chair of obstetrics and gynecology at the University of Alberta, said: “In future, miracle babies will be the ones that have their genes altered in utero, which might be 10 or 20 years away.”