Prevalence of Menstrual Dysfunction and Hormonal Contraceptive Use Among Elite Female Athletes from Different Sports in Germany. - Kirschbaum, Elisabeth M.; Fischer, Katharina; Speiser, Dorothee; Lautenbach, Franziska; Schwenkreis, Friedemann; Dathan-Stumpf, Anne; Legerlotz, Kirsten (Sports Medicine - Open, 2025)