- If you are capable of giving birth to or fathering a child, you must agree to use a form of birth control (examples of effective birth control are: a condom or a diaphragm with spermicidal jelly; oral, injectable, or implanted birth control; or abstinence) that is medically acceptable to your study doctor while taking part in this research study. This is necessary because the treatment involved in this study may be significantly teratogenic.