Impact of low serum progesterone levels on the day of embryo transfer on pregnancy outcome: a prospective cohort study in artificial cycles with vaginal progesterone

1. Labarta, E.
2. Mariani, G.
3. Paolelli, S.
4. Rodriguez-Varela, C.
5. Vidal, C.
6. Giles, J.
7. Bellver, J.
8. Cruz, F.
9. Marzal, A.
10. Celada, P.
11. Olmo, I.
12. Alamá, P.
13. Remohi, J.
14. Bosch, E.