Even though babies have been born through the process of in vitro fertilization (IVF) for over 35 years there has still been very limited information available to parents about the risk of developmental problems for children conceived through assisted reproductive technologies (ART). Obtaining these data has been a challenge for a number of reasons, the most significant being difficulty in getting long-term information about the children. Another major problem has been agreeing on the proper comparison group. For example, some studies have shown an increase in obstetrical complications when women who conceived through IVF are compared to women who had no difficulty