Intraindividual Comparison of the Anabolic Steroid Hormone Profile Between Hormonal Contraceptive Use and the Phases of a Natural Menstrual Cycle in a Recreational Athlete: A Single-Case Observational Study. - Nolte J; Voss SC; Keiler AM; Legerlotz K; Platen P (Case reports in endocrinology, 2026)