1. Department of Perinatology, Marmara University Pendik Training and Research Hospital, Istanbul, Turkey
2. Department of Perinatology, University of Health Sciences Zeynep Kamil Women's and Children's Disease Training and Research Hospital, Istanbul, Turkey
3. Department of Pediatric Cardiology, University of Health Sciences Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
4. Department of Pediatric Cardiology, University of Health Sciences Zeynep Kamil Women's and Children's Disease Training and Research Hospital, Istanbul, Turkey