1. Department of Obstetrics, Vivantes Medical Center Neukölln, Berlin, Germany
2. Department of Pediatrics, Charité University Medical Center Campus Virchow-Klinikum, Berlin, Germany
3. Department of Pediatrics, Vivantes Medical Center Neukölln, Berlin, Germany
4. University Children’s Hospital, Basel, Switzerland
5. Department of Obstetrics, Charité University Medical Center Campus Virchow-Klinikum, Berlin, Germany