[1] Radboudumc, Dept Obstet & Gynaecol, Nijmegen, Netherlands
[2] Stichting PAMM, Dept Pathol, Eindhoven, Netherlands
[3] Radboudumc, Dept Pathol, Nijmegen, Netherlands
[4] Ghent Univ Hosp, Dept Pathol, Ghent, Belgium
[5] CWZ, Dept Obstet & Gynaecol, Nijmegen, Netherlands
[6] Elisabeth Tweesteden Hosp, Dept Pathol, Tilburg, Netherlands