Dinox GmbH is a contract research organization (CRO) based in Berlin, Germany. We have been conducting clinical trials for more than 25 years in the field of female health research. This includes planning and investigating specific research objectives concerning gynaecological products like female contraception or hormone therapy. We conduct clinical trials of all phases with a main focus on phase II trials (assess efficacy and safety). We specialize in all methodology necessary for conducting clinical trials in female subjects: gynaecological examinations and smears, transvaginal ultrasounds (TVUS), endometrial biopsies, the application of preparations including intrauterine devices, collection of biological material, as well as all examinations associated with the safety of our participants. dinox strengths: Only CRO in Europe offering large scale single-center ovulation-inhibition studies (up to 200 randomized subjects) Outstanding data quality due to a highly qualified team with more than 25 years of experience in the conduct of ovulation-inhibition trials Transvaginal ultrasounds performed by dedicated in-house gynaecologists Within the last 5 years, out of 19 published ovulation-inhibition studies, 11 were performed by dinox A large database of healthy female subjects in combination with online recruitment tools and a low drop-out during study, guarantee a completed project within the predefined deadlines Through dinox consultancy both Dr. Christine Klipping (founder of dinox) and Dr. Ingrid Duijkers (over > 30 years of clinical experience) provide comprehensive advice on the realization of clinical trials and can advise on the scientific background (selection of pharmacodynamic assessments, study design, interpretation of data from TVUS and hormone analyses) as well as the practical implementations on the trial. data protection declaration under: https://www.dinox.de/datenschutzerklaerung