What is a good medical study that says it is to dangerous for an eleven yr old to have a baby

Patient: An 11 year old has been raped and now is pregnant. The parents are asking the government to allow an abortion. In court, it has been difficult to prove that it is to dangerous for the girl to have the baby. I need to find a study that says it is to dangerous and that she should be allowed to make an abortion. She’s in her first trimester. Please HELP!

Doctor: