Ludwig Maximilian University of Munich (LMU) - Division of Pediatric Epidemiology, Charité - Universitätsmedizin Berlin - Institute of Virology, Heidelberg University - Paediatric Infectious Diseases, Charité - Universitätsmedizin Berlin - Institute of Virology, Charité - Universitätsmedizin Berlin - Institute of Virology, Heidelberg University - Paediatric Infectious Diseases, Ludwig Maximilian University of Munich (LMU) - Division of Pediatric Epidemiology, RWTH Aachen University - Department of Paediatrics, RWTH Aachen University - Department of Paediatrics, Charité - Universitätsmedizin Berlin - Department of Paediatric Respiratory Medicine, Immunology, and Critical Care Medicine, Dresden University of Technology - Department of Paediatrics, Heinrich Heine University Dusseldorf - Department of General Pediatrics, Neonatology, and Pediatric Cardiology, University of Freiburg - Department of General Pediatrics, Adolescent Medicine and Neonatology, University of Freiburg - Department of General Pediatrics, Adolescent Medicine and Neonatology, University of Rostock - Department of Paediatrics, Justus Liebig University Giessen - Department of Paediatrics, University Medical Center Hamburg- Eppendorf - University Children's Hospital, University Medical Center Hamburg- Eppendorf - University Children's Hospital, Hannover Medical School - Centre for Paediatrics and Adolescent Medicine, Hannover Medical School - Centre for Paediatrics and Adolescent Medicine, Saarland University - Department of General Paediatrics, Neonatology, Helios-Klinikum Krefeld - Department of Paediatrics, Helios-Klinikum Krefeld - Department of Paediatrics, Ludwig Maximilian University of Munich (LMU) - Division of Paediatric Infectious Diseases, Ludwig Maximilian University of Munich (LMU) - Dr. von Hauner Children's Hospital, Technische Universität München (TUM) - Department of Pediatrics, University Hospital Würzburg - Division of Paediatric Infectious Diseases, Heidelberg University - Paediatric Infectious Diseases, Charité - Universitätsmedizin Berlin - Institute of Virology, Ludwig Maximilian University of Munich (LMU) - Division of Pediatric Epidemiology and Heidelberg University - Paediatric Infectious Diseases

Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology, University of Bonn, LIMES Institute, Genomics and Immunoregulation, Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology, University of Münster - Institute of Immunology, University of Lubeck - Department of Pediatrics, Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School - Institute of Immunology, Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology, University of Bonn, Life and Medical Sciences Institute (LIMES), Genomics & Immunoregulation, University of Lubeck - Department of Infectious Diseases and Microbiology, University of Kiel - Institute of Experimental Medicine, Max Planck Institute for Evolutionary Biology, Hannover Medical School - Department of Pathology, University of Lubeck - Department of Infectious Diseases and Microbiology, Hannover Medical School - Centre for Paediatrics and Adolescent Medicine, Hannover Medical School - Institute of Immunology, University of Kiel - Institute of Experimental Medicine, University of Lubeck - Department of Pediatrics, University of Bonn - Life and Medical Sciences Institute (LIMES), University of Münster - Institute of Immunology and Hannover Medical School - Department of Pediatric Pneumology, Allergology and Neonatology