1. Virology Department, Institute of Medical Microbiology and Virology, Leipzig University Hospital, Johannisalle 30, 04103 Leipzig, Germany
2. Interdisciplinary Center for Infectious Diseases, Leipzig University Hospital, Liebigstrasse 20, 04103 Leipzig, Germany
3. Department of Respiratory Medicine, Leipzig University Hospital, Liebigstrasse 20, 04103 Leipzig, Germany
4. Child Life and Health, University of Edinburgh, Royal Hospital for Children and Young People, 50 Little France Crescent, Edinburgh EH16 4TJ, UK
5. Centro Nacional de Microbiología and CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, C/ Sinesio Delgado, 4, 28029 Madrid, Spain
6. Division of Infectious Diseases and Tropical Medicine, Department of Medicine I, Leipzig University Hospital, Liebigstrasse 20, 04103 Leipzig, Germany