Weisshaar, Elke, Thomas Sciascia, and Sonja Stander. “Efficacy and Safety of Oral Nalbuphine Extended Release in Prurigo Nodularis: Results of a Phase 2, Randomized, Controlled Trial With an Open Open-Label Extension Phase”. SKIN The Journal of Cutaneous Medicine 5, no. 1 (January 1, 2021): s29. Accessed July 3, 2024. https://jofskin.org/index.php/skin/article/view/1180.