1. Department of Internal Medicine Division of Endocrinology Radboud University Medical Center Nijmegen The Netherlands
2. Department of Internal Medicine and Radboud Center for Infectious Diseases Radboud University Medical Center Nijmegen The Netherlands
3. Radboud Institute for Molecular Life Sciences (RIMLS) Radboud University Nijmegen Medical Center Nijmegen The Netherlands
4. Department of Genetics University Medical Center Groningen University of Groningen Groningen The Netherlands
5. Department of Laboratory Medicine Laboratory of Medical Immunology (LMI) Radboud University Medical Center Nijmegen The Netherlands
6. Research Center for Vitamins and Vaccines Bandim Health Project Statens Serum Institut Copenhagen Denmark
7. Odense Patient Data Explorative Network University of Southern Denmark/Odense University Hospital Odense Denmark
8. Department of Laboratory Medicine Radboud Laboratory for Diagnostics (RLD) Radboud University Medical Center Nijmegen The Netherlands
9. Department for Immunology & Metabolism, Life and Medical Sciences Institute (LIMES) University of Bonn Bonn Germany