Sterility is a problem that affects 10-17% of the population in reproductive age and it might cause serious psychic and emotional disorders in the couple.

40% of sterility problems are caused by the woman, another 40% by the man and the other 20% for different reasons such as the mucus-semen incompatibility.

After a year’s regular sexual relations without pregnancy it is time to suspect the existence of a problem due to sterility.

From the beginning of the eighties assisted reproductive techniques have been used to help the couple to get over this handicap.

In 1987 “Clínica Ginecológica de Zaragoza”, now “Aísa de Reproducción y Biotecnología”, succeeded the first baby by the method.