1 Amsterdam UMC, University of Amsterdam, Center for Experimental and Molecular Medicine, Amsterdam Institute for Infection and Immunology, Amsterdam, The Netherlands.
2 Radboudumc, Department of Internal Medicine, Radboud Center for Infectious Diseases (RCI) and Radboud Institute of Health Sciences (RIHS), Nijmegen, The Netherlands.
3 National Institute for Public Health and the Environment (RIVM), Center of Infectious Disease Control, Bilthoven, The Netherlands.