The purpose of this study is to compare the effect of pre-IVF cycles treatment with and
without DHEA(Dehydroepiandrosterone) on the ovarian reserve markers, the number of oocytes
obtained and IVF(in vitro fertilization) outcomes of DOR(diminished ovarian reserve) patients
and the expression of BMP-15(bone morphogenetic protein 15),GDF-9(growth differentiation
factor 9) and IGF-I(insulin-like growth factors-1) in follicular fluid.