1. Karolinska Institutet, Department of Clinical Sciences, Danderyd Hospital, Division of Dermatology, Danderyd, Sweden,
2. Department of Medicine, Rheumatology Unit, Karolinska Institutet/Karolinska University Hospital, Stockholm, Sweden
3. Karolinska Institutet, Department of Clinical Sciences, Danderyd Hospital, Division of Dermatology, Danderyd, Sweden