Schellevis François G, Groenewegen Peter P
a NIVEL (Netherlands Institute for Health Services Research) , Utrecht , the Netherlands.
b Department of General Practice and Elderly Care Medicine/EMGO Institute for Health and Care Research , VU University Medical Center , Amsterdam , the Netherlands.
Eur J Gen Pract. 2015;21(4):215-6. doi: 10.3109/13814788.2015.1092517. Epub 2015 Nov 13.