Cumulative live birth rate after two single frozen embryo transfers (eSFET) versus a double frozen embryo transfer (DFET) with cleavage stage embryos: a retrospective cohort study

1. López Regalado, M.L.
2. Clavero, A.
3. Gonzalvo, M.C.
4. Serrano, M.
5. Martínez, L.
6. Mozas, J.
7. Rodríguez-Serrano, F.
8. Fontes, J.
9. Romero, B.
10. Castilla, J.A.