Extended high dose letrozole regimen versus short low dose letrozole regimen as an adjuvant to gonadotropin releasing hormone antagonist protocol in poor responders undergoing IVF-ET**

Author: Fouda Usama M.   Sayed Ahmed M.  

Publisher: Informa Healthcare

ISSN: 1473-0766

Source: Gynecological Endocrinology, Vol.27, Iss.12, 2011-12, pp. : 1018-1022

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