1. Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
2. Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
3. Department of Public Health, University of Southern Denmark, Odense, Denmark
4. Department of Clinical Biochemistry, Holbaek Hospital, Holbaek, Denmark
5. National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark