1. Department of Clinical Biochemistry Zealand University Hospital Køge Denmark
2. Department of Clinical Medicine, Faculty of Health & Medical Sciences University of Copenhagen Copenhagen Denmark
3. Department of Clinical Biochemistry Copenhagen University Hospital, Herlev Gentofte Herlev Denmark
4. Copenhagen General Population Study Copenhagen University Hospital, Herlev Gentofte Herlev Denmark
5. Department of Dermatology Zealand University Hospital Roskilde Denmark