1. Department of Clinical Biochemistry, Gentofte Hospital, University of Copenhagen,
Hellerup, Denmark
2. Department of Clinical Biochemistry, Vendsyssel Hospital,
Hjørring, Denmark
3. Department of Clinical Biochemistry,
Rigshospitalet, Copenhagen, Denmark
4. Department of Clinical Chemistry, Malmö University Hospital,
Malmö, Sweden
5. Department of Clinical Biochemistry, Roskilde Hospital,
Roskilde, Denmark