1. Department of Medical Biosciences/Pathology; Umeå University; Umeå Sweden
2. Section of Infectious Diseases and Dermatology; Department of Medicine; Karolinska Institute; Huddinge Stockholm Sweden
3. Department of Dermatology; Umeå University Hospital; Umeå Sweden
4. Department of Pathology; Falu Lasarett; Falun Sweden
5. Department of Pathology; Örebro University Hospital; Örebro Sweden