Engebretsen, K. A., Kezic, S., Riethmuller, C., Franz, J., Jakasa, I., Hedengran, A., et al. (2018). Changes in filaggrin degradation products and corneocyte surface texture by season. British Journal of Dermatology, 178(5), 1143-1150. doi:10.1111/bjd.16150.