No. Combined oral contraceptives (OCPs) and GnRH analogues do not guarantee delayed oocyte loss.
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Concha Leal Cariñena
Bachelor's Degree in Medicine from the University of Zaragoza. She has an extensive career as a gynaecologist specialising in assisted reproduction and is also an associate lecturer in the Department of Surgery, Gynaecology and Obstetrics at the University of Zaragoza