| Affiliation: | (1) Institute for Rehabilitation Research, PO box 192, 6430 AD Hoensbroek, The Netherlands;(2) Department of General Practice and Care and Public Health Research Institute, Maastricht University, PO box 616, 6200 MD Maastricht, The Netherlands;(3) Department of Epidemiology, Maastricht University, PO box 616, 6200 MD, The Netherlands;(4) Department of Medical, Clinical and Experimental Psychology, Maastricht University, PO box 616, 6200 MD, The Netherlands;(5) Julius Center for Health Sciences and Primary Care, University Medical Centre, PO box 85500, 3508 GA Utrecht, The Netherlands;(6) Department of Statistics and Methodology, Maastricht University, PO box 616, 6200 MD, The Netherlands |
