[1] Catharina Hosp, Dept Gynaecol & Obstet, Eindhoven, Netherlands
[2] Catharina Hosp Eindhonen, Dept Radiol, Eindhoven, Netherlands
[3] Elisabeth Twee Ste Hosp, Dept Reprod Med, Tilburg, Netherlands
[4] Eindhoven Univ Technol, Dept Elect Engn, Eindhoven, Netherlands