NOMAC-E2 shows a better contraceptive effectiveness than LNG combined oral contraceptives in women under 25: real-world PRO-E2 study. - von Stockum, Sophia; Bauerfeind, Anja; Becker, Kerstin; Franke, Christian; Fruzzetti, Franca; Calaf, Joaquim; Keck, Christoph; Heinemann, Klaas (Gynecological Endocrinology, 2023)