1. Scientific Institute for Quality of Healthcare (IQ healthcare), Radboud University Nijmegen Medical Centre, Netherlands,
2. Scientific Institute for Quality of Healthcare (IQ healthcare), Radboud University Nijmegen Medical Centre, Netherlands
3. RAND, Boston, MA, USA, Division of General Medicine and Primary Care, Brigham and Women's Hospital, Boston, MA, USA, Harvard Medical School and Harvard School of Public Health, Boston, MA, USA