1. Endometriosis Centre Dres. Keckstein, Richard-Wagner Strasse 18, 9500 Villach, Austria
2. Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital Womens Centre, OX3 9DU Oxford, UK
3. Department of Gynaecological Surgery, University Clermont Auvergne CHU, Estaing 1 Place Lucie Aubrac, 63000 Clermont-Ferrand, France
4. Department of Obstetrics and Gynecology, HFR Fribourg Hopital cantonal, 1708 Fribourg, Switzerland
5. 1st Department of Obstetrics and Gynecology, Medical School Aristotle University of Thessaloniki, Tsimiski 51 Street, 54623 Thessaloniki, Greece
6. World Endometriosis Society, London N1 3JS, UK
7. Hôpital de la Citadelle, Department of Obstetrics & Gynecology, 4000 Liège, Belgium
8. Endometriosis Centre, Clinic Tivoli-Ducos, Bordeaux, France
9. Department of Obstetrics and Gynaecology, Aarhus University Hospital, Aarhus, Denmark
10. Reproductive Medicine Unit, Elizabeth Garrett Anderson Wing Institute for Women’s Health, University College Hospital, NW1 2BU London, UK
11. Department of Obstetrics and Gynecology, Aretaeio Hospital, 2024 Nicosia, Cyprus
12. Department of Obstetrics and Gynaecology, Leuven University Fertility Centre, University Hospital Leuven, 3000 Leuven, Belgium
13. Department of Obstetrics and Gynaecology, Martin Luther Hospital, 14193 Berlin, Germany
14. ESHRE, Central office - Meerstraat 60, BE 1852 Grimbergen, Belgium
15. University Hospital for Gynecology, Carl von Ossietzky Universitat Oldenburg, 26129 Oldenburg, Germany