1 Vrije Universiteit Amsterdam, Athena Institute for Research on Innovation and Communication in Health and Life Sciences, Amsterdam, Netherlands. m.b.vander.waal@vu.nl.
2 Triall Foundation, Maarssen, Netherlands.
3 Vrije Universiteit Amsterdam, Athena Institute for Research on Innovation and Communication in Health and Life Sciences, Amsterdam, Netherlands.
4 The Netherlands National Institute for Public Health and the Environment (RIVM), Center for Infectious Disease Control, Bilthoven, Netherlands.