1. Transeedijk 62 Lobith Netherlands 6915 XZ
2. Radboud University Medical Centre; Department of General Practice and Family Medicine; 117 Hag PO Box 9101 Nijmegen Netherlands 6500 HB
3. Radboud University Nijmegen Medical Centre; Department of General Practice, 117 HAG; P.O. Box 9101 Nijmegen Netherlands 6500 HB
4. Rijnstate Hospital Arnhem; Rheumatology; PO Box 9555 Arnhem Netherlands 6800 TA
5. Radboud University Medical Centre Nijmegen; Department of General Practice and Family Medicine, 117 HAG; PO Box 9101 Nijmegen Netherlands 6500 HB