1 Department of Obstetrics and Gynecology, Erasmus MC University Medical Center, Rotterdam-Sophia Children's Hospital, Rotterdam, The Netherlands.
2 Department of Dermatology, Center of Pediatric Dermatology, Erasmus MC University Medical Center, Rotterdam-Sophia Children's Hospital, Rotterdam, The Netherlands.
3 Department of Pediatric Urology, Erasmus MC University Medical Center, Rotterdam-Sophia Children's Hospital, Rotterdam, The Netherlands.