N. Dokuzeylül Güngör, T. Gürbüz, A. F. Gökmen Karasu, and A. Erşahin, “The alteration of first trimester screening markers in fresh and frozen-thawed blastocyst transfers”, Eur Res J, vol. 5, no. 4, pp. 686–690, Jul. 2019, doi: 10.18621/eurj.400462.