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Scatter plots showing correlation between Vitamin D with narrow band ultraviolet B (NBUVB) photo-therapy and psoriasis area and severity index (PASI) (a) Correlation of % 25(OH)D increase with mean cumulative dose of Narrowband ultraviolet B phototherapy (NBUVB). (b) Correlation between mean improvement in Psoriasis Area and Severity Index (PASI) and 25(OH)D after 12 weeks of phototherapy
