1. Department of Laboratory Medicine , Radboud University Medical Centre , Nijmegen , the Netherlands
2. Foundation for Quality Assurance in Laboratory Medicine (SKML) , Nijmegen , the Netherlands
3. Department of Genetics, Rare Diseases and Personalized, Medicine Rare Diseases and Autoinflammatory Unit , CHU Montpellier, University of Montpellier , Montpellier , France
4. Laboratory Medicine , University Hospital Leuven , Leuven , Belgium
5. Department of Public Health, Laboratory Medicine, Biomedical Sciences Group , University Hospital Leuven , Leuven , Belgium
6. Department of Biomedical and Clinical Sciences “Luigi Sacco” , Research Centre for Metrological Traceability in Laboratory Medicine (CIRME), University of Milan , Milan , Italy