@article{Valkova_Andreeva_Milachich_Bandreva_Penkova_Bochev_Petkova_Timeva_Shterev_2020, title={Determination of Optimal Number of Vitrified Human Autologous or Donor Oocytes Needed for One Live Birth}, volume={30}, url={https://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/1695}, DOI={10.15407/cryo30.04.384}, abstractNote={<p><em>Probl Cryobiol Cryomed 2020; 30(4): 384–388</em></p>}, number={4}, journal={Problems of Cryobiology and Cryomedicine}, author={Valkova , Lyuboslava and Andreeva , Petya and Milachich , Tanya and Bandreva , Boryana and Penkova , Petya and Bochev , Ivan and Petkova, Boryana and Timeva , Tanya and Shterev , Atanas}, year={2020}, month={Dec.}, pages={384–388} }