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Omland, Silje Haukali; Gniadecki, Robert (2015). "Psoriasis inversa: A separate identity or a variant of psoriasis vulgaris?". Clinics in Dermatology. 33 (4). Elsevier BV: 456–461. doi:10.1016/j.clindermatol.2015.04.007. ISSN0738-081X. PMID26051061.
Omland, Silje Haukali; Gniadecki, Robert (2015). "Psoriasis inversa: A separate identity or a variant of psoriasis vulgaris?". Clinics in Dermatology. 33 (4). Elsevier BV: 456–461. doi:10.1016/j.clindermatol.2015.04.007. ISSN0738-081X. PMID26051061.