Durable response in the markers of cholestasis through 5 years of open-label extension study of obeticholic acid in primary biliary cholangitis. (February 2020) - Nevens, F.; Shiffman, M.L.; Drenth, J.P.H.; Bowlus, C.L.; Vargas, V.; Andreone, P.; van Erpecum, K.; Floreani, A.; Liberman, A.; Pencek, R.; Malecha, E. Smoot; MacConell, L.; et al.