Franssen ME, de J.G. 2004. A left/right comparison of twice-daily calcipotriol ointment and calcitriol ointment in patients with psoriasis: the effect on keratinocyte subpopulations. Acta Dermato-Venereologica. 84, 3 (Jun. 2004), 195–200. DOI:https://doi.org/10.1080/00015550410025930.