1. Centre for Health Economics Research and Modeling Infectious Diseases (CHERMID), and Centre for the Evaluation of Vaccination (CEV), University of Antwerp, Antwerp, Belgium.
2. Laboratory of Experimental Hematology, University of Antwerp, Antwerp, Belgium.
3. Interuniversity Institute for Biostatistics and Statistical Bioinformatics, Hasselt University, Diepenbeek, Belgium.
4. Department of Microbiology, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium.
5. School of Public Health, University of Sydney, Sydney, N.S.W., Australia.