1. Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
2. Laboratory of Microbiology, Parasitology and Hygiene, University of Antwerp, Antwerp, Belgium
3. Laboratory of Experimental Medicine and Pediatrics, University of Antwerp, Antwerp, Belgium
4. Department of Pediatrics, Antwerp University Hospital, Edegem, Belgium
5. National Influenza Centre, Sciensano, Brussels, Belgium
6. Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
7. Department of Gastroenterology and Hepatology, Antwerp University Hospital, Edegem, Belgium
8. Department of Critical Care Medicine, Antwerp University Hospital, Edegem, Belgium
9. Department of Intensive Care Medicine, Ghent University Hospital, Ghent, Belgium