Department of Paediatrics and Adolescent Medicine, Division of Neonatology, Pediatric Intensive Care, an Neuropaediatrics, Comprehensive Center for Paediatrics, Medical University of Vienna, Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-maternal Medicine, Comprehensive Center for Paediatrics, Medical University of Vienna, Department of Clinical Epidemiology, Tyrolean Federal Institute for Integrated Care, Tirol Kliniken GmbH, Department of Clinical Epidemiology, Tyrolean Federal Institute for Integrated Care, Tirol Kliniken GmbH, Department of Clinical Epidemiology, Tyrolean Federal Institute for Integrated Care, Tirol Kliniken GmbH, Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-maternal Medicine, Comprehensive Center for Paediatrics, Medical University of Vienna, Medical University of Vienna and Medical University of Vienna - Department of Obstetrics and Gynecology