Kushnir, Valerii, Svitlana Dmytrenko, Oleksandr Katilov, and Natalia Kushnir. “Itching As the Onset of Pain (part 3)”. Pain medicine 5, no. 2 (June 30, 2020): 76–85. Accessed September 23, 2021. https://painmedicine.org.ua/index.php/pnmdcn/article/view/226.