1 Department of Experimental Immunology of Amsterdam UMC, Amsterdam Institute for Immunology and Infectious Diseases, Cancer Center Amsterdam, Amsterdam, The Netherlands. Hergen.spits@amsterdamumc.nl.
2 Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
3 Clinical Lung and Allergy Research Unit, Department of Medicine Huddinge, Karolinska Institutet, Medical unit for Lung and Allergy Diseases, Karolinska University Hospital Huddinge, Stockholm, Sweden.