1 Department of Pediatric and Adolescent Medicine, Helios Hospital Berlin-Buch, Schwanebecker Chaussee 50, 13125, Berlin, Germany. ralf.trauzeddel@helios-gesundheit.de.
2 Department of Pediatrics, University Medicine Gießen, Feulgenstrasse 10-12, 35392, Giessen, Germany.
3 Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charite Platz 1, 10117, Berlin, Germany.
4 , Gundelfingen, Germany.
5 Department of Paediatric and Adolescent Rheumatology, North-Western German Centre for Rheumatology, St. Josef-Stift Sendenhorst, Westtor 7, 48324, Sendenhorst, Germany.
6 St. Marien Children's Hospital, Grillparzerstrasse 9, 84036, Landshut, Germany.