Badenbroek Ilse F, Stol Daphne M, Nielen Marcus Mj, Hollander Monika, Kraaijenhagen Roderik A, de Wit G Ardine, Schellevis François G, de Wit Niek J
Netherlands Institute for Health Services Research (NIVEL), P.O. Box 1568, Utrecht, 3500 BN, The Netherlands.
Julius Center, University Medical Center Utrecht, Utrecht, The Netherlands.
BMC Fam Pract. 2016 Apr 6;17:42. doi: 10.1186/s12875-016-0438-7.