Statistical analysis:
All medical reports derived from the SAP-system of the Children’s University Hospital Tübingen (SAP Netweaver SAP GUI for Windows, Version 7300.3.10.1084, SAP SE, Walldorf, Germany). The data were collected in Microsoft Excel (Microsoft Excel 2010 Version 14.0 for Windows, Microsoft Germany GmBH, Munich, Germany). Graphs were created with GraphPad Prism for Windows, version 7, 2017 (GraphPad Software Inc., La Jolla, CA, USA).