1. Department of Biochemistry and Immunology , Lillebaelt Hospital , Vejle , Denmark
2. DEKS , Rigshospitalet, Copenhagen University Hospital , Glostrup , Denmark
3. Department of Clinical Biochemistry , Regionshospitalet Gødstrup , Herning , Denmark
4. Department of Clinical Biochemistry , Holbæk Hospital , Holbaek , Denmark
5. Department of Clinical Biochemistry , Copenhagen University Hospital – Rigshospitalet , København Ø , Denmark
6. Faculty of Health and Medical Sciences , University of Copenhagen , København , Denmark
7. Department of Internal Medicine , Lillebaelt Hospital , Vejle , Denmark
8. Department of Regional Health Research , Faculty of Health Sciences, University of Southern Denmark , Odense , Denmark