1. Danish Ramazzini Centre; Department of Occupational Medicine; Aarhus University Hospital; Aarhus Denmark
2. Department of Public Health, Section for Epidemiology; Aarhus University; Aarhus Denmark
3. Department of Occupational and Environmental Medicine; Bispebjerg Hospital of Copenhagen University; Copenhagen Denmark
4. Research Unit for Obstetrics and Gynecology; Institute of Clinical Research; University of Southern Denmark; Odense Denmark