C. R. Højland, H. H. Andersen, J. M. Poulsen, L. Arendt-Nielsen, and P. Gazerani, “A Human Surrogate Model of Itch Utilizing the TRPA1 Agonist Trans-cinnamaldehyde”, Acta Derm Venereol, vol. 95, no. 7, pp. 798–803, Apr. 2015.