1 Department of Genetics, University Medical Center Utrecht, the Netherlands; Department of Obstetrics, University Medical Center Utrecht, the Netherlands. Electronic address: r.snoek-2@umcutrecht.nl.
2 Department of Obstetrics, University Medical Center Utrecht, the Netherlands.
3 Department of Pediatric Urology, University Medical Center Utrecht, the Netherlands.
4 Department of Obstetrics and Gynaecology, Tygerberg Hospital, Capetown; University of Stellenbosch, Stellenbosch, South Africa.
5 Department of Pediatric Nephrology, University Medical Center Utrecht, the Netherlands.
6 Department of Pediatric Urology, University Medical Center Utrecht, the Netherlands; Department of Pediatric Urology, Academic Medical Center, Amsterdam, the Netherlands.