Study to Compare hFSH-HP (Fostipur) and hMG-HP(Meriofert) in Patients With Polycystic Ovary Under a IVF/ICSI Cycle.

Inclusion Criteria: * Female age between 18 and 38 years (inclusive) * Women with a BMI under 30 kg / m2 * Diagnosis of polycystic ovary syndrome (according to criteria of Rotterdam) * Women who want pregnancy * Basal basal FSH levels under or equal 10 IU / l * Infertility justify treatment with in vitro fertilization / intracytoplasmic sperm injection * To be included in a protocol with GnRH antagonist * Presence of both ovaries and uterus able to support embryo implantation and pregnancy * Absence of pregnancy before starting ovarian stimulation * Written consent Exclusion Criteria: * Severe male factor not allowing an in vitro fertilization / intracytoplasmic sperm injection with ejaculated sample * Patients with low ovarian reserve * Important endocrine-metabolic systemic diseases affecting pituitary, thyroid, adrenals, pancreas, liver or kidney * HIV seropositivity * To have frozen embryos from previous cycles of assisted reproduction * Undiagnosed vaginal haemorrhage * Poor response in previous cycles of in vitro fertilization with standard stimulation protocols * Pregnancy, lactation or contraindication to get pregnant * Malformations of the sexual organs incompatible with pregnancy * History of allergy to gonadotrophin preparations or its excipients * Alcohol, drugs or psychotropic addiction * Concurrent participation in another study * Previous history of severe hyperstimulation syndrome * Concomitant medication that may interfere with the study medication: different hormonal treatments used in the study, other thyroid hormones, antipsychotics, anxiolytics, hypnotics, sedatives, chronic treatment with inhibitors of prostaglandin