1 Department of Paediatric Respiratory Medicine, School for Public Health and Primary Care (CAPHRI), Maastricht University Medical Centre+, Maastricht, The Netherlands.
2 Department of Medical Microbiology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands.
3 Institute of Medical Microbiology, RWTH Aachen University Hospital, RWTH Aachen University, Aachen, Germany.
4 Department of Medical Microbiology, School for Public Health and Primary Care (CAPHRI), Maastricht University Medical Centre+, Maastricht, The Netherlands.