1. Department of Public Health and Nursing; Faculty of Medicine and Health Sciences; NTNU, Norwegian University of Science and Technology; Trondheim Norway
2. Department of Dermatology; St. Olavs Hospital; Trondheim University Hospital; Trondheim Norway
3. Department of Endocrinology; St. Olavs Hospital; Trondheim University Hospital; Trondheim Norway
4. Centro Studi Gruppo Italiano Studi Epidemiologici in Dermatologia (GISED); Bergamo Italy
5. Azienda Ospedaliera Papa Giovanni XXIII; Bergamo Italy
6. Department of Cancer Research and Molecular Medicine; Faculty of Medicine and Health Sciences; NTNU, Norwegian University of Science and Technology; Trondheim Norway