1. Second Department of Obstetrics and Gynecology, ‘Aretaieion’ Hospital, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
2. Oxford Endometriosis CaRe Centre, Nuffield Department of Women's & Reproductive Health, University of Oxford, Oxford, UK
3. Lefkos Stavros, The Athens Clinic, Athens, Greece
4. Whipps Cross Hospital, Barts Health, NHS Trust, Leytonstone, London, UK