1. Institute for Women's Health, University College Hospital, Reproductive Medicine Unit, Elizabeth Garrett Anderson Wing, London NW1 2BU, UK
2. University of Oxford, Endometriosis CaRe Centre, Nuffield Department of Obstetrics and Gynaecology, John Radcliffe Hospital, Women's Centre, Oxford OX3 9DU, UK
3. HFR Fribourg Hopital Cantonal, Department of Obstetrics and Gynecology, 1708 Fribourg, Switzerland
4. Medical School, Aristotle University of Thessaloniki, First Department of Obstetrics & Gynecology, Tsimiski 51 Street, 54623 Thessaloniki, Greece
5. World Endometriosis Society, London N1 3JS, UK
6. Landeskrankenanstalten-Betriebsgesellschaft (KABEG) and Landeskrankenhaus Villach, Abteilung für Gynäkologie und Geburtshilfe, 9500 Villach, Austria
7. Department of Obstetrics and Gynecology, Hôpital de la Citadelle, BE-4000 Liège, Belgium
8. Department of Obstetrics and Gynecology, Aretaeio Hospital, 2024 Nicosia, Cyprus
9. Martin-Luther Hospital, Department of Obstetrics and Gynecology/Endometriosis Center, 14193 Berlin, Germany
10. ESHRE, Central Office—Meerstraat 60, BE-1852 Grimbergen, Belgium
11. Carl von Ossietzky Universitat Oldenburg, University Hospital for Gynecology, DE-26129 Oldenburg, Germany