C. Bonifati, F. Ameglio, M. Carducci, G. Sacerdoti, M. Pietravalle, and M. Fazio, “Interleukin-1-beta, interleukin-6, and interferon-gamma in suction blister fluids of involved and uninolved skin and in sera of psoriatic patients”, Acta Derm Venereol, vol. 74, pp. 23–24, Feb. 1994.