1 Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universitätzu Berlin, Berlin, Germany.
2 Department of Gynecology and Obstetrics, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
3 Division of Obstetrics and Maternal Fetal Medicine, Department of Obstetrics and Gynecology, University Hospital Frankfurt Goethe-University, Frankfurt am Main, Germany.
4 Department of Obstetrics and Gynecology, Buerger Hospital, Frankfurt, Germany.
5 Department of Obstetrics, Cliniques Universitaires Saint-Luc, Brussels, Belgium.
6 Department of Obstetrics and Perinatology, Jagiellonian University, Medical College, Krakow, Poland.
7 Obstetrics and Gynecology Unit, Department of Woman, Child and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy.
8 Department of Neuroscience, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy.
9 Department of Obstetrics and Gynecology, Alexandra Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
10 Departamento de Ginecologia, Centro Hospitalar e Universitário de São João, Porto, Portugal.
11 Department of Obstetrics and Gynaecology, Bordeaux University Hospital, Bordeaux, France.
12 Department of Gynecological Oncology, Erasmus MC Cancer Center, Rotterdam, The Netherlands.
13 Department of Obstetrics and Gynecology, Fetomaternal Medical Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
14 Division of Maternal-Fetal Medicine, Department of OB-GYN, Baylor College of Medicine, Houston, Texas, USA.
15 Université de Lorraine, CHRU-NANCY, Pôle de la Femme, Nancy, France.
16 Université de Lorraine, Inserm, IADI, Nancy, France.