Comparison of Clomiphene Citrate and Gonadotropins in Ovulation Induction Cycles

Inclusion Criteria: * \< 39 years old on day of randomisation * FSH \< 12 (in the early follicular phase) * Normal ultrasound scan, i.e. presence of both ovaries, without evidence of abnormality within 6 months prior to randomisation. * Chronic oligo or anovulation (WHO 2) * BMI between 18 and 31 (both inclusive) Exclusion Criteria: * ≥ 39 years old on day of randomisation