OK heres my 2 cents on why it might be true ... I was just watching a medical show about a lady in Africa that had an ultrasound of her baby when she was aprox 8 months along. They found that the baby was living outside the womb attached to the liver for the blood supply needed. There was no ambilical cord there at all I think that she was attached in and around the shoulder area so that might explain it. She was born by c section a healthy 6. something pounds. This is only happeneds 2 or 3 times a year around the world they were explaining.
Hope that helps a little Ill try to find it somewhere in the net for ya all it was pretty cool