1. Department of Internal Medicine, Amsterdam UMC, Location VU University, Amsterdam, The Netherlands
2. Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
3. JJ Van Rood Center for Clinical Transfusion Research, Sanquin Research, Leiden, The Netherlands
4. Department of Cardiology, Amsterdam UMC, Location VU University, Amsterdam, The Netherlands
5. Department of Public Health & Primary Care, Leiden University Medical Center, Leiden, The Netherlands