Durable response in the markers of cholestasis through 18 months of open-label extension with obeticholic acid in primary biliary cholangitis. (8th October 2016) - Trauner, M.; Nevens, F.; Andreone, P.; Mazzella, G.; Strasser, S.; Bowlus, C.; Invernizzi, P.; Drenth, J.; Pockros, P.; Regula, J.; Floreani, A.; Hohenester, S.; et al.