VICTOR , Arne; LITHELL , Hans; SELINUS , Lngemar; VESSBY , Bengt. Pharmacodynamics of a Contraceptive Vaginal Ring Releasing Norethindrone and Estradiol: Ovarian Function, Bleeding Control and Lipoprotein Patterns. Upsala Journal of Medical Sciences, [S. l.], v. 89, n. 2, p. 179–188, 1984. DOI: 10.3109/03009738409178478. Disponível em: https://ujms.net/index.php/ujms/article/view/7023. Acesso em: 13 nov. 2026.