1. Department of Medical Epidemiology and Biostatistics; Karolinska Institutet; Stockholm Sweden
2. Department of Cardiology; Södersjukhuset; Stockholm Sweden
3. Department of Epidemiology Research; Statens Serum Institut; Copenhagen Denmark
4. Department of Hematology; Copenhagen University Hospital; Copenhagen Denmark
5. Department of Monitoring and Evaluation; Public Health Agency of Sweden; Stockholm Sweden
6. Department of Clinical Immunology; Odense University Hospital; Odense Denmark
7. Department of Clinical Immunology; Aarhus University Hospital; Aarhus Denmark
8. Department of Clinical Immunology and Transfusion Medicine; Karolinska University Hospital; Stockholm Sweden
9. Department of Laboratory Medicine; Karolinska Institutet; Stockholm Sweden
10. Department of Immunology, Genetics and Pathology; Uppsala University; Uppsala Sweden
11. Department of Gastroenterology; The Alfred Health; Melbourne Vic. Australia
12. Central Clinical School; Monash University; Melbourne Vic. Australia