1. Department of Clinical Immunology Aarhus University Hospital Aarhus Denmark
2. Danish Big Data Centre for Environment and Health (BERTHA) Aarhus University Roskilde Denmark
3. Department of Clinical Immunology Zealand University Hospital Køge Denmark
4. The Danish Clinical Quality Program–National Clinical Registries (RKKP) Central Denmark Region Aarhus Denmark
5. Department of Clinical Immunology Aalborg University Hospital Aalborg Denmark
6. Department of Clinical Immunology Odense University Hospital Odense Denmark
7. Department of Epidemiology Research Statens Serum Institut Copenhagen Denmark
8. Department of Clinical Immunology Copenhagen University Hospital Copenhagen Denmark
9. Department of Neurology Danish Headache Center Copenhagen University Hospital Glostrup Denmark
10. Faculty of Health and Medical Sciences Novo Nordisk Foundation Center for Protein Research University of Copenhagen Copenhagen Denmark
11. Statens Serum Institut Copenhagen Denmark
12. Department of Public Health Aarhus University Aarhus Denmark