**Author details**

Iavor K. Vladimirov1,2\*, Desislava Tacheva1,2 and Vladislav Dobrinov1

1 In vitro Fertilization Unit, Sofia Hospital of Obstetrics, Gynaecology and Reproductive Medicine, Sofia, Bulgaria

2 Faculty of Biology, Sofia University "St. Kliment Ohridski", Sofia, Bulgaria

\*Address all correspondence to: vladimirov@ivf.bg

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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*The Present and Future of Embryo Cryopreservation DOI: http://dx.doi.org/10.5772/intechopen.80587*

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