1. Odense University Hospital, Odense, Denmark
2. Copenhagen University Hospital, Copenhagen, Denmark
3. Zealand University Hospital, Roskilde, Denmark
4. Aalborg University Hospital, Aalborg, Denmark
5. Aarhus University Hospital, Aarhus, Denmark
6. Statens Serum Institut, Copenhagen, Denmark
7. University of Copenhagen, Slagelse, Denmark
8. University of Copenhagen, Hillerød, Denmark
9. University of Copenhagen, Copenhagen, Denmark