“Long-Term Safety and Efficacy of Difelikefalin in Subjects With Chronic Kidney Disease–Associated Pruritus: Analysis From KALM-1 and KALM-2”. SKIN The Journal of Cutaneous Medicine, vol. 5, no. 6, Nov. 2021, p. s75, https://doi.org/10.25251/skin.5.supp.75.