ABD-ELWAHED, H. A.; ALY, T. M.; ALI, A. R.; KHALIL, E. M. M. Induction of ovulation in women with PCOS using letrozole versus letrozole plus gonadotropin and its effect on spontaneous on going pregnancy rate through multicenter IVF in Beni-Suef city using randomized controlled study. International journal of health sciences, [S. l.], v. 6, n. S4, p. 7653–7662, 2022. DOI: 10.53730/ijhs.v6nS4.11717. Disponível em: https://sciencescholar.us/journal/index.php/ijhs/article/view/11717. Acesso em: 1 jun. 2026.