Conclusion The OCP + long GnRH agonist and the OCP + fixed GnRH antagonist protocols yield similar ongoing pregnancy rates in women with PCOS. Although this study consisting three hundred patients, seems to be large enough in a single center, we were not able to reach to the actual size of power analysis which was approximately 3,000. Content Type Journal ArticleCategory Reproductive MedicinePages 1-7DOI 10.1007/s00404-012-2348-9Authors Bulent Haydardedeoglu, Division of Reproductive Endocrinology and IVF Unit, Department of Obstetrics and Gynecology, Faculty of Medicine, Baskent University, Sumer mah. 69168 sok. Grand Park Plaza C Blok kat:12 No:24 Seyhan, Adana, TurkeyEsra Bulgan Kilicdag, Division of Reproductive Endocrinology and IVF Unit, De...

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