HASSAN, M. F. Efficacy of extended clomifene citrate regimen in comparison with gonadotropins in clomifene citrate-resistant women with polycystic ovary syndrome. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 3, n. 1, p. 19–25, 2016. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/739. Acesso em: 7 oct. 2025.