1 Department of General Pediatrics & Neonatology, Justus Liebig University and Universities of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany.
2 Member of the German Center for Lung Research (DZL), Giessen, Germany.
3 Department of Medical Statistics, Justus Liebig University of Giessen, Giessen, Germany.
4 Department of Gynecology and Obstetrics, Justus Liebig University of Giessen, Giessen, Germany.
5 Department of Pediatric Radiology, Institute for Diagnostic and Interventional Radiology, Justus Liebig University of Giessen, Giessen, Germany.