1. Department of Obstetrics and Gynaecology, Center for Reproductive Medicine, Amsterdam University Medical Center (UMC), University of Amsterdam , Amsterdam, The Netherlands
2. Department of Sexology and Psychosomatic Obstetrics and Gynaecology, Amsterdam University Medical Center (UMC) , Amsterdam, The Netherlands
3. Department of Development and Regeneration, University of Leuven (KU Leuven) , Leuven, Belgium
4. Department of Obstetrics & Gynaecology, Division of Reproductive Medicine, Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam , Amsterdam, The Netherlands
5. Department of Public Health and Primary Care, University of Leuven (KU Leuven) , Leuven, Belgium