1. Marjan Faber ( ) is the senior research fellow and coordinator of research, Scientific Institute for Quality of Healthcare, Radboud University Nijmegen Medical Centre, in the Netherlands.
2. Gerlienke Voerman was a postdoctoral fellow at the Scientific Institute for Quality of Healthcare and is now completing her medical internship at the Radboud University Nijmegen Medical Centre, Nijmegen, in the Netherlands.
3. Antje Erler is a senior researcher at the Institute of General Practice, Goethe University Frankfurt, in Germany.
4. Tina Eriksson is a part-time general practitioner in Copenhagen, Denmark.
5. Richard Baker is a professor in the Department of Health Sciences, University of Leicester, in England.
6. Jan De Lepeleire is a professor of general practice at the Katholieke Universiteit Leuven, in Belgium.
7. Richard Grol is a professor emeritus of quality of care at Radboud University Nijmegen and Maastricht University, in the Netherlands.
8. Jako Burgers is head of the Department of Guideline Development and Research, Dutch College of General Practitioners, in Utrecht, the Netherlands.