1 Department of Gynecology and Obstetrics, Research institute "Reproduction and Development", Amsterdam UMC, location VU medical center, Amsterdam, The Netherlands.
2 Department of Gynecology and Obstetrics, Cardiff University, Cardiff, United Kingdom.
3 Department of Gynecology and Obstetrics, Hospital Universitari Dexeus, Barcelona, Spain.
4 Department of Gynecology and Obstetrics, KU Leuven, Leuven, Belgium.
5 Department of Gynecology and Obstetrics, Imperial College London, London, United Kingdom.
6 Institut du sien et de Chirurgie gynécologique d'Avignon, Polyclinique Urbain V (Elsan Group), Avignon, France.
7 Institut de Recherche experimentale et clinique, Université Catholique de Louvain, Brussels, Belgium.
8 Department of Gynecology and Obstetrics, Aarhus University Hospital, Aarhus, Denmark.
9 Department of Gynecology and Obstetrics, Hôpitaux Universitaires de Genève, Geneva, Switzerland.
10 Department of Gynecology and Obstetrics, University College Hospital, London, United Kingdom.
11 Department of Gynecology and Obstetrics, Sheba Medical Center, Ramat Gan, Israel.
12 Department of Gynecology and Obstetrics, Deventer Hospital, Deventer, The Netherlands.