1. Department of Hematology Amsterdam University Medical Centers, Vrije Universiteit Amsterdam, Cancer Center Amsterdam Amsterdam The Netherlands
2. Department of Internal Medicine Franciscus Gasthuis & Vlietland Rotterdam The Netherlands
3. Department of Internal Medicine Zaandam Medical Center Zaandam The Netherlands
4. Department of Internal Medicine Northwest Clinics Alkmaar The Netherlands
5. Department of Internal Medicine OLVG Amsterdam The Netherlands
6. Department of Internal Medicine Spaarne Gasthuis Hoofddorp The Netherlands
7. Erasmus School of Health Policy and Management Erasmus University Rotterdam Rotterdam The Netherlands