1 Clinical Department of Laboratory Medicine and National Reference Centre for Respiratory Pathogens, University Hospitals Leuven, 3000 Leuven, Belgium.
2 Clinical Department of Laboratory Medicine and National Reference Centre for Respiratory Pathogens, University Hospitals Leuven, 3000 Leuven, Belgium; Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium.
3 Clinical Department of Laboratory Medicine and National Reference Centre for Respiratory Pathogens, University Hospitals Leuven, 3000 Leuven, Belgium; Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium. Electronic address: pieter.vermeersch@uzleuven.be.