Institution: | a Department of Radiology, Gooi-Noord Hospital, Rijksstraatweg 1, 1261 AN, Blacirum, The Netherlands b Department of Medical Statistics, University of Leiden, 2300 RC, Leiden, The Netherlands c Division of Reproductive Endocrinology and Fertility, Department of Obstetrics and Gynecology, Free University Hospital, 1007 MB, Amsterdam, The Netherlands d Department of Obstetrics and Gynecology, Gooi-Noord Hospital, 1261 AN, Blacirum, The Netherlands |