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