GUNARDI, Eka R. Levonorgestrel Concentration in a Single Rod Implant Users for Six Months. Indonesian Journal of Obstetrics and Gynecology, [S. l.], v. 35, n. 3, 2016. Disponível em: https://inajog.com/index.php/journal/article/view/261. Acesso em: 21 feb. 2026.