1. Van Creveldkliniek University Medical Center Utrecht Utrecht the Netherlands
2. Physical Therapy Research Departement of Rehabilitation Nursing Science and Sport Brain Center Rudolf Magnus University Medical Center Utrecht Utrecht the Netherlands
3. Center for Physical Therapy Research and Innovation in Primary Care Leidsche Rijn Julius Health Care CenterUtrecht the Netherlands
4. Departement of Hematology Radboud University Medical Center Nijmegenthe Netherlands
5. Department of Hematology Erasmus University Medical Center Rotterdam the Netherlands
6. Department of Epidemiology CAPHRI School for Public Health and Primary Care Maastricht University Maastricht the Netherlands