1. Department of General Internal Medicine, University Hospitals Leuven, and Department of Microbiology, Immunology, and Transplantation, KU Leuven, Leuven, Belgium (L.M., A.B.)
2. Department of Radiology, University Hospitals Leuven, Leuven, Belgium (W.C., E.C.)
3. Department of Nuclear Medicine, University Hospitals Leuven, Leuven, Belgium (L.B.)
4. Interuniversity Institute for Biostatistics and Statistical Bioinformatics (L-BioStat), University of Leuven and Hasselt University, Leuven, Belgium (G.M.)
5. Department of General Internal Medicine, University Hospitals Leuven, Department of Microbiology, Immunology, and Transplantation, KU Leuven, and European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases (ERN-RITA), Leuven, Belgium (S.V., D.B.)
6. Department of Nuclear Medicine, University Hospitals Leuven, and Department of Imaging and Pathology, Nuclear Medicine and Molecular Imaging, KU Leuven, Leuven, Belgium (K.V.L.).