1. Department of Dermatology Zealand University Hospital Roskilde Denmark
2. Department of Public Health, Section of Biostatistics University of Copenhagen Copenhagen Denmark
3. Department of Clinical Physiology Nuclear Medicine and PET, Rigshospitalet, University of Copenhagen Copenhagen Denmark
4. Department of Occupational and Social Medicine Holbæk University Hospital Holbæk Denmark
5. Department of Public Health, Section of Social Medicine University of Copenhagen Copenhagen Denmark