How to cite this article:
Bibancos M, Cavagnoli M, Bonetti TCS, Semaco E, Motta ELA, Serafini PC. Letrozole Therapy for Obstructive Azoospermic Men before in vitro Fertilization (IVF) treatment with Percutaneous Epididymal Sperm Aspiration. JBRA Assist. Reprod. 2015; 19: 230-234