1. Leuven Institute for Healthcare Policy KU Leuven Leuven Belgium
2. Faculté de Santé Publique Institute for Health and Society (IRSS) and Institute of Economic and Social Research (IRES) Université catholique de Louvain (UCLouvain) Brussels Belgium
3. Department of Data Analytics and Digitalization Maastricht University Maastricht The Netherlands
4. Department of Economics University of Antwerp Antwerp Belgium