Huerta C, Rivero E, Rodriguez LA. Incidence and risk factors for psoriasis in the general population. Arch Dermatol. 2007 Dec;143(12):1559-65.
Pearson IV, Page MD, van Spanning RJM, Ferguson SJ. A mutant of paracoccus denitrificans with disrupted genes coding for cytochrome c550 and pseudoazurin establishes these two proteins as the in vivo electron donors to cytochrome cd1 nitrite reductase. J Bacteriol. 2003 Nov 1;185(21):6308-15.