Bennink, H.J.T.C.

embryo oocyte follicle pregnancy cryopreservation cycle transfer blastocyst development stage stimulation factor culture study reprod follicle development treatment protocol embryo cryopreservation infertility growth embryo transfer blastocyst stage procedure patient antagonist pregnancy rates number pregnancy rate blastocyst transfer problem couple fertil outcome in-vitro implantation dif ®cult gnrh antagonists ef ®cacy quality antral follicles agonist fertilization alternative gnrh agonist chance fauser health result maturation steril bene ®ts recruitment country in-vitro maturation evaluation stimulation protocols ovary effect regimen granulosa approach differentiation cyclic recruitment population delivery reason identi ®ed infertility diagnosis endocrinol hormone women children signi tissue antral pre-antral difference birth metaphase ii oocytes