NOMAC-E2 compares to LNG combined oral contraceptives in women over forty: real-world PRO-E2 study. - von Stockum, Sophia; Becker, Kerstin; Bauerfeind, Anja; Franke, Christian; Fruzzetti, Franca; Calaf, Joaquim; Keck, Christoph; Heinemann, Klaas (Gynecological Endocrinology, 2023)