1. Center for Benign Haematology, Thrombosis and Haemostasis, Van Creveldkliniek University Medical Centre (UMC) Utrecht, Utrecht University Utrecht the Netherlands
2. Department of Rheumatology & Clinical Immunology University Medical Center (UMC) Utrecht, Utrecht University Utrecht the Netherlands
3. Department of Hematology, Cancer Center University Medical Center (UMC) Utrecht Utrecht University Utrecht the Netherlands