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Danielsen, K.; Duvetorp, A.; Iversen, L.; Østergaard, M.; Seifert, O.; Tveit, K. S.; Skov, L. Prevalence of Psoriasis and Psoriatic Arthritis and Patient Perceptions of Severity in Sweden, Norway and Denmark: Results from the Nordic Patient Survey of Psoriasis and Psoriatic Arthritis. Acta Derm Venereol 2018, 99, 18-25.