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2, IMS Pruritus Market Landscape Analysis Sept (2014).

3, Oeda, S, et al. Prevalence of pruritus in patients with chronic liver disease: A multicenter study, Hepatology Research, (2018); 48: E252–E262.

4, Fujino et al. Pruritus in patients with chronic liver disease and serum autotaxin levels in patients with primary biliary cholangitis, BMC Gastroenterology (2019) 19:169, 4-8.