The aromatase inhibitor letrozole increases the concentration of intraovarian androgens and improves in vitro fertilization outcome in low responder patients: A pilot study

1. Garcia-Velasco, J.A.
2. Moreno, L.
3. Pacheco, A.
4. Guillén, A.
5. Duque, L.
6. Requena, A.
7. Pellicer, A.