1. Perinatal Epidemiology Research Unit, Department of Pediatrics, Aarhus University Hospital, Skejby, Aarhus, Denmark
2. Danish Ramazzini Centre, Department of Occupational Medicine, Aarhus University Hospital, Aarhus, Denmark
3. Pediatric Urology and Research Unit, Department of Urology, Aarhus University Hospital, Skejby, Aarhus, Denmark
4. Department of Occupational and Environmental Medicine, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
5. Department of Epidemiology, School of Public Health, University of Aarhus, Aarhus, Denmark