Merel Bruijn 1, Gert-Jan van Baaren 1, Jolande Vis 1, Jan van Straalen 2, Femke Wilms 3, Martijn Oudijk 4, Anneke Kwee 4, Martina Porath 5, Guid Oei 5, Hubertina Scheepers 3, Marc Spaanderman 3, Kitty Bloemenkamp 6, Antoinette Bolte 7, Caroline Bax 7, Jérôme Cornette 8, Johannes Duvekot 8, Maureen Franssen 9, Krystyna Sollie 9, Frank Vandenbussche 10, Mallory Woiski 10, William Grobman 11, Joris van der Post 1, Patrick Bossuyt 12, Brent Opmeer 13, Ben Mol 1
1 Academic Medical Center, Department of Obstetrics and Gynecology, Amsterdam, Netherlands
2 Academic Medical Center, Department of Clinical Chemistry, Amsterdam, Netherlands
3 Maastricht University Medical Center, Department of Obstetrics and Gynecology, Maastricht, Netherlands
4 University Medical Center Utrecht, Department of Obstetrics and Gynecology, Utrecht, Netherlands
5 Máxima Medical Center, Department of Obstetrics and Gynecology, Veldhoven, Netherlands
6 Leiden University Medical Center, Department of Obstetrics and Gynecology, Leiden, Netherlands
7 VU University Medical Center, Department of Obstetrics and Gynecology, Amsterdam, Netherlands
8 Erasmus Medical Center, Department of Obstetrics and Gynecology, Rotterdam, Netherlands
9 University Medical Center Groningen, Department of Obstetrics and Gynecology, Groningen, Netherlands
10 Radboud University Nijmegen Medical Center, Department of Obstetrics and Gynecology, Nijmegen, Netherlands
11 Northwestern University Medical School, Department of Obstetrics and Gynecology, Chicago, IL
12 Academic Medical Center, Clinical Epidemiology, Biostatistics and Bioinformatics, Amsterdam, Netherlands
13 Academic Medical Center, Clinical Research Unit, Amsterdam, Netherlands