Regidor, Pedro-Antonio, Manuela Sailer, Enrique Calvo, Enrico Colli, and Santiago Palacios. 2020. “Improvement of Dysmenorrhea, Menstrual Bleeding and Continuation Rate in Women Using the New Vaginal Ring Ornibel®”. European Gynecology & Obstetrics 2 (2). https://doi.org/10.53260/EGO.2020213.