1. Dionne S. Kringos ( ) is a postdoctoral health systems researcher in the Department of Social Medicine at the Academic Medical Center, University of Amsterdam, in the Netherlands.
2. Wienke Boerma is a senior researcher at NIVEL, the Netherlands Institute for Health Services Research, in Utrecht.
3. Jouke van der Zee is a part-time professor in the Department of International Health at Maastricht University, in the Netherlands.
4. Peter Groenewegen is the director of NIVEL.